DEV Community: Auke de Haan

Amazon Inventory Performance Index Guide 2026

Auke de Haan — Thu, 25 Jun 2026 19:30:43 +0000

The Amazon Inventory Performance Index (IPI) measures how efficiently you manage FBA inventory. A score below 400 triggers storage limits. Here is how to fix it.

What the IPI measures

Your IPI reflects four metrics: excess inventory percentage, sell-through rate, stranded inventory, and in-stock rate for top sellers. Amazon updates it weekly.

7 steps to raise a low score

Create removal orders for excess stock
Run promotions to improve sell-through
Fix stranded listings immediately
Hold new shipments before quarterly evaluations
Keep top sellers in stock
Switch slow movers to FBM temporarily
Set reorder alerts by days of supply

Full guide: https://amazonlistingaudit.com/blog/amazon-inventory-performance-index-guide-2026

Best Golf Net for Backyard 2026

Auke de Haan — Thu, 25 Jun 2026 19:25:48 +0000

Picking the right backyard golf net comes down to three things: how much room you have, how hard you swing, and whether you want the ball to come back to you automatically.

Here is a quick breakdown of the top options in 2026:

Rukket Haack Golf Net (10 ft wide): best all-round pick for durability under driver shots
Callaway Tri-Ball Net (8 ft wide): built-in targets help you aim from day one
Spornia SPG-7: automatic ball return, worth the extra cost if you hit high volumes
SKLZ Quickster: fastest setup, best for portability
GoSports 7x7: budget pick under $110

For a full breakdown with pros, cons, and setup tips, see the complete guide:

Best Golf Net for Backyard 2026: Top Picks for Home Practice

Includes what to look for in netting material, frame construction, and how to set up a safe backyard practice area.

Best VPN for Gaming 2026: Top Picks for Speed, Low Ping, and Privacy

Auke de Haan — Thu, 25 Jun 2026 19:22:32 +0000

Best VPN for Gaming 2026

Looking for the best VPN for gaming in 2026? We tested NordVPN, ExpressVPN, Mullvad, Surfshark, and PIA for speed, latency, and server coverage.

NordVPN is the top pick for most gamers thanks to NordLynx (WireGuard-based), 6,400+ servers, and consistently low ping overhead (12-18 ms on EU servers). Mullvad wins on privacy (no account required, WireGuard native). Surfshark is best for households needing unlimited devices.

Key findings from 30 days of testing:

WireGuard protocols add 4-8 ms overhead on nearby servers vs 15-40 ms for OpenVPN
Free VPNs are too congested and bandwidth-capped for gaming
Console gaming (PS5, Xbox) requires router-level VPN setup

Read the full guide: https://vpnadviser.com/blog/best-vpn-for-gaming-2026

Why Your Amazon Listing Does Not Show Up in Search Results

Auke de Haan — Thu, 25 Jun 2026 18:25:27 +0000

If your Amazon product exists in Seller Central but customers cannot find it, your listing is not indexed. This is different from ranking poorly. A non-indexed listing appears nowhere, not even on page 10.

The most common causes are:

Missing required fields. Every category has required fields beyond title and price. Check the Vital Info, Compliance, and More Details tabs in Seller Central for red asterisks.
Prohibited backend keywords. Competitor brand names, ASINs, and banned terms in your search terms field will trigger a policy flag that blocks indexing.
Main image violations. If your main image has a non-white background, text overlay, or watermark, Amazon may suppress the listing before it ever indexes.
Duplicate ASIN. If your product already exists under another ASIN, Amazon may de-index your version and require you to match to the existing listing.
Category restrictions. Gated categories block listings from sellers without approval.

To fix indexing, work through each cause systematically, then submit a catalog data refresh request through Seller Central to speed up reindexing.

For a complete walkthrough with step-by-step instructions, see the full guide: Amazon Listing Not Indexed: How to Find and Fix It in 2026.

Running a full Amazon listing audit before you publish any ASIN catches most of these problems before they cost you sales.

Garmin R10 vs FlightScope Mevo Plus 2026: Which Launch Monitor Wins?

Auke de Haan — Thu, 25 Jun 2026 17:54:59 +0000

Two of the most popular launch monitors under $2,000, head to head. Here is the quick verdict and then the detailed breakdown.

Quick verdict: R10 wins on price ($599 vs $1,999) and portability. Mevo Plus wins on data depth (16 metrics vs 6) and outdoor accuracy.

Key Differences

Feature	Garmin R10	Mevo Plus
Price	$599	$1,999 (+$299 Space-Saver for indoor)
Data parameters	6	16
Spin measurement	No	Yes
Outdoor accuracy	Moderate	Excellent
Portability	Excellent	Good
Software compatibility	Garmin/E6	E6, TGC, GSPro, more

Who Should Buy the R10

If your budget is under $800, your primary use is indoor home simulator play, and your swing speed is below 105 mph, the R10 is the right choice. Setup takes two minutes. Accuracy is solid for ball speed, launch angle, and carry.

Who Should Buy the Mevo Plus

If you want spin data, you use the device on the range AND indoors, or you are doing club fitting or coaching work, the Mevo Plus is worth the extra cost. Budget $2,298 if you need the Space-Saver for indoor rooms under 12 feet.

Full comparison

Full head-to-head including accuracy at fast swing speeds, simulator software compatibility, and setup requirements: Garmin R10 vs Mevo Plus 2026

Best VPN for School 2026: Bypass Restrictions on School Wi-Fi

Auke de Haan — Thu, 25 Jun 2026 17:52:41 +0000

The best VPNs for school in 2026 are NordVPN, ExpressVPN, Mullvad, Proton VPN, and Surfshark. All five use obfuscation features that disguise VPN traffic as regular HTTPS traffic, making them harder for school firewalls to detect and block.

School networks block VPNs using IP blocklists, deep-packet inspection (DPI), and port blocking. To bypass these, you need a VPN with obfuscation support.

Why Obfuscation Matters on School Networks

Standard VPN traffic has a recognisable packet signature. DPI firewalls see this and block it. Obfuscation tools like XOR (NordVPN), Lightway (ExpressVPN), Shadowsocks (Mullvad), and Stealth protocol (Proton VPN) disguise VPN traffic so it looks like normal HTTPS browsing.

Running the VPN on port 443 (the HTTPS port) also helps significantly since this port is almost never blocked by schools.

Top Picks

NordVPN - Best overall. Obfuscated servers work on aggressive DPI firewalls. 6,500+ servers. From $3.99/month.

ExpressVPN - Best for consistent speed. Lightway protocol handles obfuscation automatically. One-click connect.

Mullvad - Best for privacy. No email required to sign up. Shadowsocks obfuscation. Around $5.50/month flat.

Proton VPN - Best free option. Stealth protocol on free tier. No data cap, no ads.

Surfshark - Best budget. Unlimited devices. Camouflage Mode for obfuscation. From $2.99/month.

Full guide

Full rankings, setup instructions, and troubleshooting tips: Best VPN for School 2026

AI tools for Dutch accountants in 2026: what actually works (and what the NBA says)

Auke de Haan — Fri, 19 Jun 2026 11:13:47 +0000

English-language "AI for accountants" guides miss most of what matters for the Netherlands. They don't mention the NBA (the Dutch professional body for accountants), GDPR processing agreements, or how the EU AI Act deadline of 2 August 2026 affects audit firms.

Here's what the Dutch accounting market actually looks like in mid-2026, based on interviewing practitioners at firms ranging from solo bookkeepers to mid-sized audit teams.

Invoice processing: the most mature category

This is where AI has actually delivered. Dext (formerly Receipt Bank), Basecone, and Twinfield now process Dutch invoices at 90%+ accuracy before human review. The key integration is with Dutch accounting software: Exact Online, Snelstart, and AFAS all have native connections.

For a typical ZZP'er (self-employed) with 50-100 invoices a month, this is already solved. The tooling exists, it works, and it costs 20-40 EUR per month.

For mid-sized kantoren processing thousands of documents: the gains are even larger, but you're looking at managed implementations rather than plug-and-play tools.

Microsoft Copilot for Finance: worth it if you're already Microsoft

If your firm is on Microsoft 365, Copilot for Finance is the most natural AI addition. It sits inside Excel and Dynamics 365, so there's no new workflow to learn. Ask it in plain Dutch to summarize a debtors list, flag outliers, or draft a management report section.

The GDPR compliance question is mostly solved: Microsoft's DPA for 365 Business covers Copilot-generated work within your tenant. Client data stays in the tenant. This matters in the Netherlands because many practitioners are nervous about CLOUD Act exposure.

Cost: ~30 EUR per user per month on top of existing 365 licensing. That's the main friction.

ChatGPT and Claude as writing assistants

Both are useful for:

Turning technical findings into client-readable language
Drafting standard client emails (requesting documents, explaining VAT positions)
Summarizing long reports for management letters

What you cannot do: paste client data (names, BSN numbers, financials) into the free consumer versions of either tool. The consumer tier is not AVG-compliant for personal data.

Safe use: anonymized scenarios, law and regulation research, draft templates that don't include actual client data. For client data: ChatGPT Enterprise or Claude for Business, both with processing agreements.

The NBA's position

The NBA (Nederlandse Beroepsorganisatie van Accountants) has published guidance that AI output must always be reviewed by the accountant before it reaches a client. The accountant remains professionally responsible. AI tools used in assurance engagements must be documented in the audit file, and the accountant must be able to explain how the tool works.

The AFM (financial markets regulator) has signaled it will include AI tool usage in quality reviews starting 2026.

DataSnipper for audit teams

DataSnipper (an Amsterdam-founded tool) runs inside Excel and automatically cross-checks documents against trial balances. For teams doing standard audit procedures, it reduces sampling time significantly. It's now used at several of the Big 4 and a growing number of Dutch mid-tier firms.

This is the category where specialized audit AI is genuinely ahead of general-purpose AI. DataSnipper does one thing (document verification in Excel) and does it at a level that ChatGPT prompting cannot replicate.

Practical recommendation by firm size

Solo bookkeeper or ZZP accountant: Start with Dext or Basecone for invoice automation. That's the highest ROI action. Use ChatGPT Business or Claude for Business for client communication drafts. Skip Copilot for Finance unless you're already on 365.

5-20 person kantoor: Invoice automation is probably already running. The next step is either Copilot for Finance (if Microsoft shop) or DataSnipper (if you do audit work). Establish a written AI policy before you expand tooling, because the NBA expects it.

Audit team or larger firm: You're likely already piloting DataSnipper or MindBridge. The work is now governance: documenting AI use in dossiers, training staff on NBA requirements, and tracking the EU AI Act classification of your tooling.

For a Dutch-language breakdown with tool comparison tables, pricing in EUR, and the full NBA compliance framework, see this guide to AI tools for Dutch accountants on AI Tools NL.

When does a private jet actually make sense? A 2026 cost breakdown for DACH travelers

Auke de Haan — Fri, 19 Jun 2026 08:46:09 +0000

Most people assume private jets are only for the ultra-wealthy. But the calculation is more nuanced than that. Once you factor in group size, time saved, and route flexibility, the math can surprise you.

This post covers two angles that German-speaking travelers often overlook: the break-even calculation for private jet charters, and the Cologne-to-Istanbul route as a case study.

The break-even question

For a solo traveler, a private jet is almost never competitive with business class. But for a group of four or more, the equation shifts. A Light Jet from Frankfurt to Zurich costs around 7,000-9,000 EUR one-way. Split four ways, that is 1,750-2,250 EUR per person, competitive with last-minute business class on short notice.

The deeper analysis -- which airport you use, what empty-leg discounts are available, and how you value your time -- is laid out in this German-language guide: Wann lohnt sich ein Privatjet? Die ehrliche Kalkulation 2026

The guide covers:

Time value calculation (how much is a saved hour worth?)
Group size thresholds where charter beats business class per seat
Empty leg pricing and how to access it
Specific break-even tables for common DACH routes

Cologne to Istanbul: an underrated route

Cologne (CGN) to Istanbul (IST or SAW) is one of those routes where private jet charter makes particular sense. The route is around 2,500 km, which puts it in Midsize Jet territory for nonstop operation.

Key facts:

Flight time: approx. 2h 50min nonstop
CGN has a dedicated business aviation terminal (GAT)
Istanbul has two major airports (IST and SAW), both with private aviation handling
Prices for a Midsize Jet start around 18,000-24,000 EUR one-way

The full route guide with pricing tables, airport comparisons, and empty leg tips is here: Privatjet Koeln Istanbul Kosten 2026

How to book

For both routes and the general break-even analysis, Villiers is the platform used most often in the DACH market. They quote from a network of over 10,000 aircraft and typically respond within an hour.

Bottom line

Private jet charter is not a fixed cost -- it scales with group size, route, and how you structure the booking. The break-even point is closer than most people think, especially for time-sensitive business travel or leisure groups of four or more.

This article references content from privatjet-vergleich.de, a German-language private jet charter comparison resource for the DACH market.

Two overlooked German private jet routes in 2026: Frankfurt-Berlin and Munich-Paris

Auke de Haan — Fri, 19 Jun 2026 08:45:45 +0000

Two city pairs that generate serious private jet demand in Germany are Frankfurt-Berlin and Munich-Paris. Both routes sit in a pricing tier that surprises people when they calculate the per-person cost for a small team.

Frankfurt to Berlin: Germany's business corridor

Frankfurt is the country's financial capital. The European Central Bank, Deutsche Boerse and most major asset managers are based there. Berlin is the seat of government and a growing technology and startup hub. The result is constant demand for same-day travel between the two cities.

By light jet, the sector takes roughly 55 to 65 minutes of flying time. From general aviation terminal to general aviation terminal the total door-to-door time is around three hours. A direct ICE train covers the same distance in 3 hours 45 minutes of train time alone, before the station arrivals are included.

The pricing for a one-way light jet charter sits between 7,900 and 10,500 EUR in 2026 as a market estimate. At seven passengers that works out to roughly 1,130 to 1,500 EUR per seat. A full breakdown by aircraft class, both departure airports (Frankfurt Egelsbach versus Frankfurt Airport, Berlin Brandenburg), and the empty-legs picture for this corridor is in the guide: Privatjet Frankfurt Berlin Kosten 2026.

Munich to Paris: the luxury travel and fashion-week route

Munich is Bavaria's economic capital. Allianz, Munich Re, Siemens, BMW and a dense cluster of Mittelstand suppliers are all based there. Paris is both a commercial destination and the world's fashion capital, which means the Munich-Paris sector peaks sharply in September, October and March around fashion week.

Flight time is approximately 1 hour 40 minutes. Paris Le Bourget (LBG) is the standard arrival airport. Le Bourget is Europe's busiest private jet airport by movements and has six FBOs, which means the infrastructure is there even at peak demand.

Market estimates for a one-way light jet from Munich to Le Bourget in 2026 run from 9,500 to 13,500 EUR. A midsize jet steps that up to 13,000 to 18,000 EUR. The guide covers the full price table, the Oberpfaffenhofen (south Munich) versus MUC departure comparison, and the seasonal demand pattern: Privatjet Muenchen Paris Kosten 2026.

What both routes have in common

On both corridors, the break-even calculation changes quickly once a team of four or more travels together. For two people, a private jet remains expensive relative to alternatives. For six to eight, the per-person cost closes much of the gap with business class while delivering the scheduling flexibility and the door-to-door time advantage.

Empty legs are worth monitoring on both routes. Frankfurt-Berlin and Munich-Paris are well-trafficked by operators repositioning aircraft. Discounts of 30 to 40 percent relative to regular charter show up regularly, though the timing is operator-driven rather than buyer-driven.

The broader market context for charter pricing in Germany is covered in this overview: Privatjet Kosten 2026.

Google Merchant Center Pending Initial Review: 7 Reasons It's Taking Longer Than Expected (2026)

Auke de Haan — Fri, 19 Jun 2026 08:01:00 +0000

You applied to Google Merchant Center, submitted your product feed, and now the account says "Pending initial review." You were told it takes 3 to 5 business days. It's been longer. What's happening?

The pending initial review is not passive. Google is actively checking 7 specific areas before it approves your account. If any of these fail, the review stalls or ends in a suspension.

The 7 Reasons Your Account Is Stuck in Pending

1. Missing contact information on your website. Google requires a physical address, phone number, or contact form. A "Contact Us" page that only has a generic form and no company name or address fails this check.

2. Policy pages not accessible. Your privacy policy, return policy, and shipping policy pages must be linked from the footer and load without redirects. If any of these return a 404 or are behind a login, the review stalls.

3. Price mismatch between feed and website. Your product feed shows $49.99 but your website currently shows $59.99. Even a 1-cent mismatch on a single product can pause the review.

4. SSL certificate issue. Your site loads over HTTP instead of HTTPS, or your SSL certificate is expired or misconfigured. Google will not approve an account whose website is not fully secure.

5. Checkout not publicly accessible. If your store is in a "coming soon" or password-protected mode, Google cannot verify the checkout experience. The whole site must be publicly accessible during the review.

6. Feed data quality issues. Missing GTINs for branded products, invalid image URLs returning 404 errors, or products with no description. These don't automatically fail the review, but they slow it down.

7. Domain age under 90 days. New domains registered fewer than 90 days ago get additional scrutiny. Google applies stricter checks to brand-new stores to reduce fraud.

What You Should Do Right Now

Don't wait passively. The review window is an opportunity to fix every issue Google is about to find. Run a full policy compliance check before the review concludes.

The Google Merchant Center pending initial review guide at GMCSuspension.com breaks down each of these 7 causes with the exact fix for each one.

You can also run the free GMCSuspension.com audit to check all 43+ GMC policy requirements in about 60 seconds. It tells you exactly which policy pages are missing, whether your prices match, and whether your checkout is accessible to Google.

What Happens If the Review Finds a Violation

This is the part most guides skip. If the review finds a policy issue, Google does not send a polite rejection. It suspends the account on the spot and sends you an email naming the reason. From that point, each appeal takes up to 7 business days and you only get two attempts before a mandatory waiting period.

Fixing everything before the review concludes is always faster than trying to appeal after a suspension.

The Timeline Once You Fix the Issues

After you fix the issues, the review does not automatically restart. You may need to trigger a re-review by making a change in Merchant Center (such as resubmitting the feed) or by contacting Google Support.

If your account has been pending for more than 10 business days without any status change or notification, contact Google Merchant Center Support directly. Extended review periods sometimes indicate the review has stalled rather than that it is still actively processing.

GMCSuspension.com is a free audit tool that checks 43+ Google Merchant Center policy requirements in about 60 seconds. No account needed.

KI Hintergrund entfernen kostenlos 2026: Remove.bg, Adobe Express und PhotoRoom im Test

Auke de Haan — Fri, 19 Jun 2026 07:43:26 +0000

KI Hintergrund entfernen kostenlos 2026

Hintergrundeentfernung mit KI hat sich in den letzten zwei Jahren fundamental veraendert. Was frueher Photoshop-Kenntnisse und Geduld erforderte, erledigt eine KI heute in unter zwei Sekunden.

In diesem Artikel zeigen wir die besten kostenlosen Tools, die ohne oder mit minimalem Aufwand funktionieren.

Remove.bg: Der Standard

Remove.bg ist das bekannteste Tool und setzt seit 2019 den Massstab. Ohne Anmeldung kannst du eine Vorschau-Version (0,25 Megapixel) kostenlos herunterladen. HD-Export erfordert Kredits oder ein Abo ab 1,99 Euro.

Staerken: Sehr gute Haare-Erkennung, API fuer Entwickler, Batch-Verarbeitung.

Adobe Express: Kostenlos mit Account

Adobe Express bietet Hintergrundentfernung in voller Qualitaet nach kostenloser Registrierung. Der Vorteil: Du kannst das freigestellte Bild direkt in einem Design weiternutzen.

PhotoRoom: Ideal fuer Produktfotos

PhotoRoom ist speziell fuer E-Commerce-Produktfotos optimiert. Studio-Hintergruende und Beleuchtungsanpassung sind direkt integriert.

Kostenlos: Mit Wasserzeichen. Pro ab 9,99 Euro/Monat.

Vollstaendiger Vergleich

Einen detaillierten Vergleich aller Tools mit DSGVO-Hinweisen findest du hier:
https://ai-tools-test.de/ratgeber/ki-hintergrund-entfernen-kostenlos-2026

Fazit

Fuer schnelle kostenlose Freistellung ohne Anmeldung: Remove.bg. Fuer volle Qualitaet kostenlos mit Account: Adobe Express. Fuer E-Commerce-Produktfotos: PhotoRoom.

5 SEO Mistakes Niche Canvas Art Shops Make (And How to Fix Them)

Auke de Haan — Wed, 17 Jun 2026 16:24:39 +0000

Running a niche canvas art store is very different from running a general print shop. Your customers know exactly what they want: a dinosaur canvas for a kids room, a historical art print for the living room, a fantasy dragon piece for a gaming setup. But most niche shops make the same SEO mistakes that keep those buyers from finding them.

Here are the five biggest ones.

1. No blog content targeting informational intent

Most canvas art shops optimize only product and collection pages. But buyers research before purchasing. Posts like "how to choose canvas art for your living room" or "what size canvas fits above a sofa" capture buyers in the consideration phase and funnel them toward purchase.

A niche shop like YourWallArts publishes guides on specific themes (dinosaur canvas, historical art, fantasy prints) that rank for long-tail queries competitors ignore.

2. Generic title tags on collection pages

"Collection - Store Name" is not a title tag. Your collection page for fantasy canvas needs a title like "Fantasy Canvas Wall Art | Dragons and Mystical Designs | Store". Include the niche keyword, the value proposition, and the brand. Under 60 characters if possible.

3. Missing meta descriptions on every page

Shopify themes frequently leave meta descriptions blank. Google then generates its own snippet, often pulling unhelpful product titles or navigation text. A hand-written 140-155 character meta description improves click-through rates significantly. Check every indexed page with site:yourdomain.com and audit for missing metas.

4. No FAQ schema on blog posts

FAQ schema puts your content in Google's People Also Ask boxes. For niche shops this is particularly valuable: "what does a lion canvas symbolize", "can I hang canvas in a dining room", "how large should canvas be above a sofa" these slots drive qualified traffic. Add FAQ JSON-LD to every blog post with five real questions about the topic.

5. Ignoring thin collection pages

Shopify collection pages often contain zero body text. Google sees a grid of products with no explanatory content and classifies the page as thin. Add 300-400 words of descriptive text above or below the product grid, covering the niche theme, style options, room fit, and a link to a related blog post. This alone can move collection pages from page 3 to page 1 for niche queries.

Building an SEO process that covers all five of these areas consistently is how niche canvas shops compete against generalist retailers with much larger marketing budgets.