Free online image, PDF & developer tools — 29 tools, no signup
Resize images, merge PDFs, format JSON and more — everything runs locally in your browser. No uploads, no account, no tracking.
- 29 free tools
- 100% private — files stay on your device
- No signup, no usage limits
- 5 languages
Are these tools really free and private?
Yes. All 29 tools are free forever — no account, no trials, no paywalls. Everything runs locally in your browser, so your files are never uploaded. Read the privacy policy or see how MiToolHub works.
Read the full answer
Yes. Every tool on MiToolHub is completely free, and you never need to create an account, sign up, or enter payment or card details. There are no trials, no premium tiers, no paywalls and no usage caps — the same full functionality is available to everyone, every day, on every device. Your files stay on your computer: all the heavy work, from resizing photos to merging PDFs, happens locally in your browser. There is nothing to download and no extension to install.
Because the processing runs entirely inside your browser, your images, documents and text never travel to a server. There is nothing to upload, store, cache or track, and nothing is ever shared with third parties or advertisers. Close the tab and the data is gone for good. If you are looking for fast, private, no-strings web tools that respect you, MiToolHub was built for you — no account, no login, no fine print. Free forever, and yours to keep.
Most used tools
Quick access to the tools people reach for most.
Recently Added
Images
Image Resizer & Compressor
Resize & bulk-compress images, ZIP export.
QR Code Generator
Custom colors, logo, PNG/SVG export.
Image & PDF Watermark
Add text watermarks with position & opacity.
Bulk File Size Reducer
Compress images and documents, download ZIP.
PDF Merger
Combine multiple documents into one file.
PDF Splitter
Split by chunk size or custom pages.
Image to PDF
Drag & reorder images, download one file.
Text & Dev
Text Diff Checker
Side-by-side line comparison.
JSON / CSV Converter
Convert & explore with a visual tree.
Hash & Encoder
MD5, SHA-256, Base64, URL.
Color Picker & Palette
HEX / RGB / HSL + shade palette.
Smart Text Analyzer
Live stats + case conversion.
Regex Tester
Test & debug regular expressions live.
JWT Decoder & Generator
Decode, verify & generate JWT tokens.
URL & Base64 Encoder/Decoder
Encode & decode Base64/URL, multi-layer decode.
SQL Formatter
Format messy SQL, dialect presets, Python/PHP export.
Code Minifier
Minify JS/CSS/HTML, obfuscate JS, batch + ZIP.
Markdown to HTML
Live preview, code highlight, tables, PDF export.
Dummy Data Generator
Fake users in JSON/CSV/SQL, up to 100k rows.
Calculators
Unit Converter
Length, weight & temperature, instantly.
Percentage Calculator
Percentages, ratios & percent change.
Date Calculator
Days between dates, add & subtract.
Number Base Converter
Binary, octal, decimal & hex, live.
Aspect Ratio Calculator
Social presets, live preview, crop-line overlay.
Time Zone Converter
Compare world clocks & DST on one timeline.
Utilities
JSON Formatter & Validator
Pretty-print, minify & validate JSON.
Timestamp Converter
Convert Unix timestamps to dates and back.
Random Generator
Numbers, UUIDs & Sample Text in bulk.
CSV & Data Cleaner
PapaParse-powered CSV editor: type detection, auto-clean, applied steps with undo. Runs 100% locally.
Why MiToolHub?
Privacy by default: here is how browser-based tools compare with upload-first online services.
| Feature | MiToolHub | Upload-first services |
|---|---|---|
| Your files are uploaded to a server | Never | Always |
| Account required | No | Usually (limited free trials) |
| Usage limits and paywalls | None, unlimited | Daily caps, paid tiers |
| Works with no connection after loading | Yes | No |
| Ads and third-party trackers | None | Ads and analytics |
| Price | Free forever | Free with paywalls |
Frequently asked questions
Is it really free?
Yes — all 29 tools are free forever, with no account and no hidden limits.
Are my files uploaded?
No. Files are opened and processed in your browser’s memory. Nothing is sent to a server — many tools keep working even if you disconnect after the page loads.
Do I need an account?
No account, no email, no login. Open a tool and use it.
How does it work offline?
Each tool is a static page powered by JavaScript and open-source libraries. Once loaded, the work happens on your device, so many tools run without a connection.
Are there any file size limits?
There is no hard limit — the only practical limit is your browser’s available memory. Modern browsers handle most files easily, including large PDFs and photos.