Free online file conversion tools that run in your browser
Convert images, compress PDFs, minify code, reshape data and transform media without uploading a single byte. Every one of these free online file conversion tools does its work locally, so your files stay on your machine and results appear instantly.
- Working tools
- 120
- Categories
- 10
- Bytes uploaded
- 0
- Cost to use
- $0
Most used
Start with the popular ones
The catalogue
Ten categories covering every everyday file job
12 tools
Convert between every common image format without uploading a single byte. These image conversion tools decode and re encode your files locally using the browser canvas and WebAssembly codecs, so your photos never leave your device.
- AVIF to JPG Converter
- Base64 to Image Converter
- BMP to PNG Converter
- GIF to PNG Converter
- HEIC to JPG Converter
- Image to Base64 Converter
12 tools
Resize, crop, compress, rotate and retouch images without installing anything. These image editing tools give you precise pixel control in the browser and export at full quality with no watermark attached.
- Bulk Image Resizer
- Favicon Generator
- Grayscale Image Converter
- Image Blur Tool
- Image Border Generator
- Image Color Picker
12 tools
Merge, split, compress, rotate and convert documents entirely in the browser. These PDF and document tools keep contracts, invoices and reports on your own machine, which matters when the file contains anything confidential.
- Delete PDF Pages
- Extract Text from PDF
- Images to PDF Converter
- Markdown to PDF Converter
- Merge PDF Files
- PDF Metadata Viewer
12 tools
Format, minify, validate and convert code without leaving the browser tab. These developer tools handle the small transformations that interrupt a build, from prettifying a JSON payload to turning an SVG into a React component.
- Code Diff Checker
- Cron Expression Parser
- CSS Minifier
- HTML Minifier
- HTML to JSX Converter
- JavaScript Minifier
12 tools
Count, clean, compare and reshape text with tools built for writers and editors. These text and writing tools process everything locally, which makes them safe for drafts, transcripts and anything under embargo.
- Case Converter
- Character Counter
- Find and Replace Text
- Lorem Ipsum Generator
- Remove Duplicate Lines
- Remove Line Breaks
12 tools
Move structured data between JSON, CSV, XML, YAML, TOML and SQL without writing a script. These data and format conversion tools parse strictly, report errors clearly and never upload your records.
- CSV to JSON Converter
- CSV to Markdown Table Converter
- CSV Viewer
- JSON Diff Checker
- JSON to CSV Converter
- JSON to SQL Converter
12 tools
Convert, trim, extract and compress media using the browser native audio and video stack. These audio and video tools avoid the upload step entirely, which is what makes working with large media files practical online.
- Audio Merger
- Audio Metadata Viewer
- Audio Speed Changer
- Audio to WAV Converter
- Audio Trimmer
- Audio Volume Booster
12 tools
Convert color spaces, build palettes, check accessibility contrast and generate gradients. These color and design tools give you exact values you can paste straight into CSS, Figma or a design token file.
- Box Shadow Generator
- Color Blindness Simulator
- Color Contrast Checker
- Color Palette Generator
- CSS Gradient Generator
- HEX to OKLCH Converter
12 tools
Generate hashes, encode and decode payloads, inspect tokens and create secure credentials. These security and encoding tools use the browser Web Crypto API so secrets are never transmitted over a network.
- Base64 Encoder Decoder
- File Hash Checker
- HMAC Generator
- HTML Entity Encoder Decoder
- JWT Decoder
- MD5 Hash Generator
12 tools
Generate meta tags, structured data, robots directives and campaign links that are valid the first time. These web and SEO tools produce output that matches the current specifications rather than advice from a decade ago.
- Canonical Tag Generator
- Hreflang Tag Generator
- Htaccess Redirect Generator
- Keyword Density Checker
- Meta Tag Generator
- Open Graph Preview Generator
Why it works this way
The conversion happens on your device, not ours
Most converters work by uploading your file, processing it on a server and sending the result back. That model is slow, it costs the operator money, and it puts a copy of your file on hardware you do not control. These free online file conversion tools do the opposite.
Private by construction
Your file is read into browser memory and never touches a network socket. Privacy is not a policy promise here, it is a property of how the tools are built.
No upload, no queue
There is no round trip, so a conversion that would take a minute of upload and download finishes in the time your processor needs and nothing more.
No arbitrary limits
Server based tools cap file sizes and daily runs because compute costs them money. Local processing costs nothing, so nothing is capped.
Works offline once loaded
After the page has loaded, the tool keeps working even if your connection drops, because all the code it needs is already in the tab.
Complete index
Every tool on one page
The full catalogue, grouped by category. Every tool is one click from here.
Questions
Frequently asked questions
Yes. There is no account, no trial period, no credit card and no daily conversion cap. The tools run as JavaScript in your own browser, so we do not pay for the compute and have no reason to meter it. The site is supported by display advertising alone.
No. Every tool reads your file directly from disk into browser memory, does the work locally and hands back a download. Nothing is sent over the network, nothing is written to a server and nothing survives closing the tab. You can confirm this by opening the network panel in developer tools while you convert a file.
We do not impose one. The real ceiling is your own device memory, since the file has to fit in the browser tab while it is processed. In practice most laptops handle files of several hundred megabytes comfortably, and mobile devices handle less.
No. There is no extension, no desktop app and no plugin. Open the tool page, choose a file and download the result. Everything needed is already part of a modern browser.
The catalogue covers 120 tools across images, PDF and documents, code, text, structured data, audio and video, colour, encoding and technical SEO. Each tool page states exactly which input formats it accepts and what it produces.
Yes. The files you produce are yours. No watermark is applied, no rights are claimed and no attribution is required.
Pick a file. Pick a format. Done in seconds.
No account to create, nothing to install and nothing leaves your machine.