Every developer has a set of micro-tasks they Google constantly. Format some JSON. Generate a UUID. Check a regex. Convert a timestamp. Each one takes 30 seconds — but the tab-hunting, ad-closing, and
cookie-banner-dismissing adds up.
I built ToolBox to put all of these in one place. 139 free tools, all running client-side in your browser. No signup, no tracking, no limits.
Here are the 7 tasks I used to Google multiple times a week, and how I handle them now.
1."json formatter online"
You get a blob of minified JSON from an API response and need to read it. Every developer has done this hundreds of times.
The problem with most JSON formatters: They upload your data to a server. If you're working with production data, API keys, or customer information, that's a non-starter.
What I do now: Paste it into ToolBox JSON Formatter. It formats, validates, and syntax-highlights instantly. Everything runs in the browser — nothing
leaves your machine.
Bonus: it auto-detects JSON on your clipboard when you visit the page.
2. "regex test online"
Regex is one of those things where the feedback loop matters more than anything. Writing regex in your code, running it, checking the output, tweaking, running again — that's painfully slow.
What I do now: ToolBox Regex Tester shows matches highlighted in real time as you type. No "Run" button. It also shows capture groups, match indices, and
count.
For more complex patterns, the Regex Playground has a library of 35+ common patterns (emails, URLs, IPs, dates) you can load with one click.
*3. "uuid generator"
*
Need a UUID for a database seed, a test fixture, or a config file? You Google it, land on a random site, copy one UUID, and close the tab.
What I do now: ToolBox UUID Generator generates cryptographically random v4 UUIDs using the Web Crypto API. Generate one or bulk-generate dozens. Copy
with a click.
*4. "base64 encode" / "base64 decode"
*
Encoding a JWT payload. Decoding a data URI. Checking what's inside a base64 blob in an email header. This comes up constantly.
What I do now: ToolBox Base64 Encoder/Decoder handles both directions instantly. Paste encoded text → get decoded output. Paste plain text → get base64.
For JWTs specifically, the JWT Decoder splits the token into header, payload, and signature with syntax highlighting.
*5. "diff checker online"
*
Comparing two config files. Checking what changed between two versions of a function. Verifying a copy-paste didn't miss anything.
What I do now: ToolBox Diff Checker shows a side-by-side diff with line numbers, color-coded additions and deletions. It's the most-used tool on the site —
for good reason.
It also works great for verifying that two texts are identical. Paste both sides, and if there's no diff, you know they match exactly (including invisible characters like trailing spaces).
6. "timestamp converter" / "unix timestamp to date"
Every API returns timestamps differently. Unix seconds, milliseconds, ISO 8601. You need to convert between them constantly.
What I do now: ToolBox Timestamp Converter converts between Unix timestamps (seconds and milliseconds), ISO 8601, and human-readable dates. It also
shows the current timestamp live, which is handy when you need "right now" as a Unix timestamp.
7. "password generator"
Setting up a new service, creating test accounts, rotating credentials. You need a strong random password and you need it now.
What I do now: ToolBox Password Generator generates cryptographically strong passwords with configurable length, character sets, and exclusion rules.
It also shows password strength analysis and estimated crack time.
Since it runs client-side, the generated password never touches a server. That matters when you're generating credentials for production systems.
Why client-side matters
Most online tools upload your input to a server, process it, and send back the result. That means your JSON with API keys, your regex test strings with customer data, your passwords — all of it hits
someone else's server.
Every tool on ToolBox runs 100% in your browser. Open DevTools, check the Network tab — you won't see any data being sent. For the few tools that need external APIs (like the Grammar Checker or
Translator), you bring your own API key.
*The full list
*
ToolBox has 139 tools across 7 categories:
- Text — Word counter, case converter, Lorem Ipsum, text diff, find & replace
- Developer — JSON formatter, regex tester, hash generator, JWT decoder, cron parser
- Converter — Base64, color converter, JSON to CSV, timestamp, unit converter
- Generator — UUID, password, QR code, color palette, dummy data
- Image — Compressor, cropper, EXIF viewer, image effects, device mockups
- Web — Meta tag generator, SEO analyzer, DNS lookup, SSL checker, CSP generator
- Design — Box shadow, gradient, flexbox, grid, typography scale, neumorphism
Check it out at toolbox-kit.com. Everything's free, no signup required.
What's the task you Google most often? I might have already built a tool for it — drop it in the comments.
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