dev101.io

Image Tools

Convert between image formats, generate data URIs, build QR codes, strip metadata — image utilities that never upload your file.

No tools shipped in this category yet — check back soon.

Images are the biggest privacy leak in most "free tool" websites — you upload a file, and it lives in their logs forever. Our image tools read files with `FileReader` inside your browser and compute entirely client-side. The file never touches our server, because we don't have a server for this.

Data URIs for inline assets

A data URI embeds a file inside a URL: data:image/png;base64,.... Useful for small icons, email signatures, and single-file HTML demos. Our Data URL tool accepts any file, auto-detects MIME from magic bytes, and emits a correctly-formatted URI. Beware: data URIs add ~33% overhead (Base64) and cannot be cached independently, so use them only for truly small assets.

Size thresholds

Under ~10 KB: data URI is a win (saves a request). 10–50 KB: maybe, depending on asset count. Over 50 KB: almost always better as a separate file with HTTP caching. Our tool shows the size and warns when you cross these thresholds.

What's coming

This category is growing: format converters (PNG ↔ WebP ↔ AVIF via canvas), QR code builder, image-size stripper, EXIF inspector, and a visual color-picker-from-image tool are all on the roadmap.

Frequently asked questions

Is my image uploaded anywhere when I use these tools?

No. The Data URL tool reads your file via `FileReader`, computes in memory, and shows the result. Verify in the Network tab — zero outbound requests.

Can I make a data URI from a file I drag onto the page?

Yes — the Data URL tool accepts drag-and-drop as well as file pickers. Both paths run entirely in your browser.

Related categories