I Built a Simple Tool for Creating Seamless Repeating Patterns

Issah Yoder — Mon, 31 Aug 2026 06:47:28 +0000

Creating a repeating pattern sounds simple: place the same image side by side and export it.

In practice, the edges rarely match. Visible seams appear, previews become difficult to inspect, and exporting large repeated layouts can quickly become tedious.

That’s why I built Seamlessify, a browser-based tool for turning ordinary images into seamless, tileable patterns.

What it can do

The free direct-stitching workspace lets you:

Upload PNG, JPG, or WebP images

Use direct stitching or blend visible edges

Preview the result as a 3×3 repeating pattern

Zoom in to inspect boundaries

Control repeat count and output dimensions

Process multiple images in batches

Export PNG, JPG, or ZIP files

The direct-stitching workflow runs in the browser and doesn’t require an account.

Optional AI pattern generation

I also added an AI workspace for creating new seamless images from:

A text prompt

A reference image

A reference image combined with written instructions

Generated images can be downloaded directly or sent into the stitching workspace for additional processing, cropping, and batch export.

The goal was to keep the workflow simple: generate or upload an image, inspect the repetition, make adjustments, and export—all without jumping between several different tools.

Why I built it

Many existing pattern tools are either too limited for batch work or include complicated controls that make a small task feel much bigger than it should.

Seamlessify is designed to stay approachable for designers, print-on-demand creators, textile projects, wallpapers, backgrounds, packaging, and game assets.

You can try it here:

👉 https://seamlessify.com

I’d love to hear what formats, controls, or workflows would make it more useful for your projects.

I built a small tool to make PDFs easier to read at night

Issah Yoder — Tue, 02 Jun 2026 03:23:25 +0000

I read a lot of PDFs at night, especially on my phone.

And honestly, PDFs are not great for that.

Most of them still feel like digital paper: white background, fixed layout, and tiny text. Dark mode helps a bit, but many tools only change the page color.

The bigger problem for me was mobile reading.

When the text is too small, I have to pinch zoom, move the page left and right, zoom out again, then repeat the same thing on the next paragraph.

After doing that too many times, I thought:

Why can’t I just read the PDF text like an article?

So I built a small free tool:

PDF Dark Mode

It has two reading modes.

Page color mode

This keeps the original PDF layout, but makes the page darker and easier to read at night.

I use this for scanned PDFs, tables, image-heavy documents, or files where the original layout matters.

Text reading mode

For selectable PDFs, the tool can extract the text and show it in a cleaner reading view.

You can adjust the font size, line height, font family, and theme.

This is the part I personally wanted most, because it makes mobile reading much more comfortable. Instead of constantly pinch-zooming a fixed PDF page, the PDF starts to feel more like a normal article.

Privacy

The tool runs locally in the browser.

Your PDF is not uploaded to a server, and refreshing the page clears the current session.

Try it

You can try it here:

PDF Dark Mode

I built it for my own night reading, but I’d love to hear feedback from anyone who reads PDFs on mobile.

Also, if you ever need to convert a dark PDF back to a light version, I made a related tool for that too: