100% client-side · zero uploads

Tools that
never see
your data.

Markdown formatter, image converters, PDF tools, SEO & GEO generator. Everything runs in your browser — no accounts, no cookies, no tracking.

10 active · 0 bytes on the server · MIT open source
formattedai.pl/en/formatter/
● client-side
INPUT · Markdown from ChatGPT
# Weekly plan

## Monday
- [ ] Editorial briefing
- [ ] **Standup** at 2pm
- [x] Code review

> "Good formatting saves time."
> — Adam

| Day  | Status |
|------|--------|
| Mon  | done   |
| Tue  | wip    |
OUTPUT · Word / Docs ⌘C copy

Weekly plan

Monday

  • ☐ Editorial briefing
  • Standup at 2pm
  • ☑ Code review
"Good formatting saves time." — Adam
DayStatus
Mondone
Tuewip
INPUT · 4 PNG files · 12.4 MB
·
hero-shot.png
4.2 MB
·
product-01.png
3.1 MB
·
product-02.png
2.8 MB
·
lifestyle.png
2.3 MB
OUTPUT · AVIF · 3.1 MB · −75%⌘D download
hero-shot.avif
1.0 MB
−76%
product-01.avif
0.8 MB
−74%
product-02.avif
0.7 MB
−75%
lifestyle.avif
0.6 MB
−74%
INPUT · 3 PDF files
·
report-q1.pdf
2.1 MB · 42 pages
·
report-q2.pdf
2.6 MB · 51 pages
·
attachments.pdf
1.8 MB · 31 pages
OUTPUT · merged.pdf · 124 pages
merged-2026-04.pdf
6.2 MB · 124 pages
ready
· merge keeps bookmarks
· compression: 6.5 MB → 6.2 MB
· consistent page numbering
0
bytes uploaded to server
10/12
tools in production
100%
open source on GitHub
WASM
native local speed
/ TOOLS · 10 / 12 active

Four registers. One manifesto.

Grouped by topic — pick a category to narrow the list.

/ HOW IT WORKS

Your file never leaves
this browser tab.

01

You load it

Drag & drop, paste, or file picker. Files load into browser memory — nowhere else.

02

We process locally

JavaScript + WebAssembly does the work natively on your CPU. Zero network requests.

03

You download the result

One click, full quality, names preserved. Close the tab — no traces.

What we send to a server:
nothing.
Literally. Devtools → Network: the only requests are the initial page load and Google fonts.
/ JOURNAL · 4 posts

Recent writing

All posts →
/ MANIFESTO

Traditional online tools see everything.
Ours see nothing.

01 — WHY

Every web tool you upload to today is a potential data leak. Documents, invoices, photos — they all end up on someone else's disk.

02 — HOW

WebAssembly and modern browser APIs let us do locally what used to require a server. No quality or speed compromise.

03 — WHAT

One place, open source on GitHub. No telemetry, no cookies, no third-party gossip about you.

Free Web Developer Tools — 100% Client-Side, Full Privacy

FormattedAI is a collection of free online tools for web developers and content creators. Every tool runs entirely in your browser — no server uploads, no accounts, no cookies, no tracking.

Available Tools

Markdown Formatter — Paste text from ChatGPT, Claude or any AI assistant and copy perfectly formatted documents to Google Docs or Microsoft Word. Supports tables, code blocks, task lists. Export to HTML, DOCX or Markdown.

AVIF Converter — Convert PNG, JPG and WebP images to modern AVIF format with up to 50% better compression. Batch conversion with quality presets and ZIP download. WebAssembly for universal browser support.

SEO & GEO Tag Generator — Generate SEO meta tags, Open Graph, Twitter Cards, Schema.org JSON-LD, llms.txt and robots.txt. The first tool combining traditional SEO with Generative Engine Optimization (GEO).

HEIC Converter — Convert HEIC/HEIF photos from iPhone and iPad to JPG, PNG or modern AVIF. Choose output format, set quality and download files. WASM decoding, 100% client-side.

OCR — Recognize text from images and scans. Tesseract.js in WebAssembly, 100+ languages, export to TXT/Markdown. Files never leave the browser.

Why Client-Side?

Traditional web tools upload your data to a server. FormattedAI works differently — all processing happens in your browser via JavaScript and WebAssembly. Your documents, images and metadata stay on your device.

What is GEO (Generative Engine Optimization)?

GEO is the next evolution of SEO. AI search engines (ChatGPT Search, Perplexity, Google AI Overview) are becoming mainstream. The SEO & GEO Tag Generator helps create Schema.org structured data, llms.txt files, and configure robots.txt for AI crawlers.