# 47 free AI tools that live in your browser (2026)

> Source: <https://dev.to/korelyy/47-free-ai-tools-that-live-in-your-browser-2026-3h25>
> Published: 2026-08-11 18:10:12+00:00

I built 47 small AI helpers that run entirely in your browser. No signup. No upload. No tracking. They live at [Korelyy](https://korelyy.com/en/) ? a tool garden I've been curating for the past few months.

Here's why I went this route, and what's in there.

##
Why browser-only?

Every AI tool I tried wanted the same three things: my email, my files, and my patience. So I started porting the ones I actually use to plain HTML + vanilla JS. They run offline, they never phone home, and they cost me nothing to host.

##
What's in the box

**Writing & text** (8 tools)

- Character counter that shows platform limits (X / LinkedIn / Meta)
- Case converter (Title / sentence / camelCase)
- Whitespace cleaner
- Markdown previewer
- Lorem generator
- Typographic quotes fixer
- Diff checker (side-by-side)
- Text statistics (readability + grade level)

**Image & files** (11 tools)

- Image converter (PNG / JPG / WebP)
- Image to PDF
- PDF to images
- Image resizer (aspect-ratio aware)
- Image cropper
- EXIF stripper
- SVG optimizer
- Favicon generator (16/32/180/192/512)
- QR code generator
- Barcode generator
- HEIC to JPG

**Calculators & life** (12 tools)

- Life weeks (how many Saturdays left)
- Life progress bar
- Sleep cycle calculator
- Tip calculator
- Loan calculator
- Compound interest
- Age in days
- Date diff
- Working days calculator
- BMI
- Calorie estimator
- Random picker

**Dev helpers** (9 tools)

- JSON formatter / validator
- JWT decoder
- UUID generator
- Hash (MD5/SHA-1/SHA-256)
- Base64 encoder/decoder
- URL encoder
- Color picker (with contrast checker)
- CSS unit converter
- HTML entity encoder

**AI / productivity** (7 tools)

- Emoji mixer (combine any two)
- Tone rewriter (formal / casual / friendly)
- Meeting agenda template
- Standup notes generator
- Daily planner
- Pomodoro timer
- Habit tracker

Total: 47.

##
How they're built

- 100% client-side. The server only ships static files.
- No analytics, no cookies, no third-party calls.
- Most are under 300 lines of vanilla JS.

##
A note on "free"

There's no catch, no upsell, no "premium" tier hidden behind a paywall. The whole point was building things I would use myself. If a tool saves you five minutes a week, that's the deal.

##
Try it

Browse the full collection at [korelyy.com/en](https://korelyy.com/en/). Available in 6 languages: English, ??, Espa?ol, Fran?ais, ??????, and ???????.

If a tool is missing or broken, drop me a line. I'm shipping new ones every week.