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Free tools for files, PDFs, images and code.
91 free tools for opening and converting files, cleaning up data, working with PDFs, images and video, and everyday developer jobs. Search for what you need.
- 91
- Free tools
- 8
- Categories
Some tools run entirely in your browser; others upload your file to the Fix42 server to process it. The full tools list marks which is which.
Most used
The three most-visited tools on Fix42.
HTML to Video Converter
Paste an HTML/CSS animation and get an MP4 back, rendered frame by frame on the server instead of screen-recorded.
Open toolBraille ASCII Art
Turn an image into braille text art you can paste into Discord, WhatsApp, or X.
Open toolAI Chat Extractor
Save your shared ChatGPT, Claude, and Grok conversations as Markdown, plain text, or JSON.
Open toolEveryday file and data tools
The jobs most people arrive with: open a file, fix a format, shrink something to send it.
Every tool, by category
All 91 tools, grouped the same way as the tools index. Each category also has its own page comparing the tools in it.
PDF Tools
12 toolsMerge, split, and process PDF documents
PDF Tools: overview and which tool to pick
PDF Merger
Merge multiple PDF files into one
PDF Splitter
Split PDF files by pages or range
PDF Add Password
Protect PDF files with passwords
PDF Remove Password
Remove the password from a PDF you can already open
PDF Rotator
Rotate PDF pages to fix orientation
Image to PDF
Convert images to PDF documents
6 more PDF Tools tools
Image & Creative
24 toolsConvert images and video, and turn HTML or images into video, GIFs and text art
Image & Creative: overview and which tool to pick
Image Converter
Convert between PNG, JPG, WebP formats
HEIC to JPG Converter
Convert iPhone HEIC photos to JPG, PNG, or WebP
SVG Converter
Convert images to scalable vectors
SVG Code to Image
Convert SVG code to PNG, JPG, or WebP
HTML to Image
Convert HTML/CSS code or URLs to PNG, JPG, or WebP
HTML to Video Converter
Convert HTML pages and CSS animations to MP4 video
18 more Image & Creative tools
Developer Tools
17 toolsCode formatting, encoding, and utilities
Developer Tools: overview and which tool to pick
AI Chat Extractor
Export your shared ChatGPT, Claude and Grok conversations as Markdown, text or JSON
JSON Formatter
Format and validate JSON data
JSON ↔ CSV Converter
Convert between JSON and CSV formats
Table to Spreadsheet
Paste HTML, Markdown, JSON, or ASCII tables and export to CSV/Excel
Base64 Encoder
Encode and decode Base64 strings
Hash Generator
Generate SHA-1 and SHA-256 hashes in your browser
11 more Developer Tools tools
Utility Tools
13 toolsCSV files, QR codes, text, timers and other everyday jobs
Utility Tools: overview and which tool to pick
CSV Viewer
View and analyze CSV files
Unit Converter
Convert between different units
Password Generator
Generate secure passwords
QR Code Generator
Create QR codes from text or URLs
Barcode Generator
Generate Code128, EAN, UPC and other barcode formats
IP Address Lookup
Lookup IP geolocation, ISP, and network details
7 more Utility Tools tools
Bioinformatics
5 toolsDNA, RNA, and sequence analysis tools
Educational
3 toolsLearning and educational tools
Finance & Business
8 toolsFinancial calculators and business tools
Finance & Business: overview and which tool to pick
Paycheck Calculator
Calculate take-home pay after taxes for USA & Canada
Invoice Generator
Create invoices & credit notes with logo, signature, and watermarks
Price Quote Generator
Create price quotes, estimates & quotations with terms
Resume Builder
Create ATS-friendly resumes with 7 templates & AI assistant
1099 Self-Employment Tax Calculator
Calculate 1099 self-employment taxes, quarterly payments & deductions
Amazon FBA Calculator
Calculate Amazon FBA fees, referral fees & profit margins
Who builds Fix42
I'm Kingsley Michael, and I build and run Fix42 on my own under Centenum Technologies. There is no team behind it: the same person writes the tools, fixes the bugs and reads the messages that come in. You can read a bit more on the about page.
It started as a place for small utilities I kept reaching for: a viewer for CSV files that are too big to open comfortably in a spreadsheet, a JSON formatter that tells you where the error is, a way to merge two PDFs without installing anything. It has grown a lot since, but the idea has not changed. Each tool should do one job, work without an account, and get out of your way.
How tools get added
Most new tools start as a request. When the search box finds nothing, it offers to send a tool request, and people also ask through the feedback button and the contact page. When several people ask for something similar, or for a format an existing tool does not handle yet, that is usually what gets built next. Plenty of requests end up as a new option on an existing tool rather than a new page. Tools that do not work well enough get fixed, and occasionally retired.
What runs in your browser and what does not
Not every tool works the same way, and that matters if your file is private. The text tools, calculators, bioinformatics tools, Markdown converters, PDF signer and image combiner run entirely in your browser, so nothing you type or open is sent anywhere.
Other jobs need software that does not run well in a browser tab. Video conversion uses FFmpeg and PDF compression uses Ghostscript, and the PDF merger, splitter and password tools also do their work on the server. Those tools upload your file to the Fix42 server, process it there and send the result back. The tools index marks every tool one way or the other, and the privacy policy explains how uploaded files are handled.
Where to start
If you are not sure which tool fits, each category page compares its tools side by side: PDF tools, image, video and creative tools, developer tools and utility tools.
For longer walkthroughs, the guides cover specific jobs from start to finish, such as turning a CSS animation into an MP4, how braille art works and exporting a ChatGPT conversation. Missing something? Request a tool.
Hear about new tools
An occasional email when a new tool or guide goes up. Unsubscribe any time.
Social Media
9 toolsContent creation and social media utilities
Social Media: overview and which tool to pick
YouTube Thumbnail Extractor
View and save thumbnails of your own YouTube videos for reference and design
Twitter Card Preview
Preview how links appear on Twitter, Facebook, LinkedIn, and Discord
Instagram Grid Planner
Plan and preview your Instagram feed layout before posting
LinkedIn Post Formatter
Create bold, italic & stylish text for LinkedIn posts
Fancy Text Generator
Cool fonts & stylish text for Instagram, Twitter, TikTok & more
Emoji Keyboard
Copy & paste 1800+ emojis for any platform
3 more Social Media tools