Files
Read, tidy and convert files without uploading them. Open a CSV as a table, clean up messy file names, or pull an MP3 out of a video — all of it in your browser.
All 5 tools
- Convert to MP3Extract audio from a video or convert an audio file to MP3 in your browser. Your file is never uploaded; up to 100 MB.
- Audio TrimmerCut a section out of an audio file in your browser: set a start and end time, preview the selection, and download the clip as MP3. Nothing is uploaded.
- CSV ViewerOpen a CSV as a readable table in your browser, with automatic delimiter detection and copy-out as clean CSV or TSV. Nothing is uploaded.
- File Hash CheckerGet the SHA-256 checksum of a file on your device, and compare it with the one the publisher listed. Runs in your browser, nothing is uploaded.
- File Name CleanerTurn messy file names into safe, tidy ones — spaces to hyphens, accents stripped, unsafe characters removed. Suggests names only; nothing is uploaded or renamed.
Why Files on Tooleem
These tools handle the small, awkward jobs that usually mean opening a heavy application or trusting an unfamiliar upload form. The CSV viewer turns a wall of commas into a readable table and works out whether the file is comma, semicolon or tab separated. The file name cleaner takes a list of messy names and returns safe ones, with spaces replaced, accents stripped and the characters that break uploads and command lines removed. The MP3 converter extracts the audio from a video or re-encodes an audio file.
What they share is where the work happens. Each one processes your file inside the browser rather than sending it to a server, which matters most for exactly the files people hesitate over: a customer export, an unreleased recording, a folder of scanned documents. Nothing is uploaded, nothing is stored, and closing the tab ends it. The MP3 converter downloads its conversion engine once on first use, and even then your file itself never leaves the device.
Files questions
Are my files uploaded?
No. Audio, CSV and the other files are processed in your browser and never leave your device.
Why does the first MP3 conversion take longer?
The first time, the browser downloads the conversion engine (ffmpeg) once. After that, conversion starts right away, and your file is never uploaded.
Does the CSV viewer open Excel files?
Yes, once the sheet is saved as CSV. It recognizes comma, semicolon and tab as delimiters.
What is a file checksum for?
To check that a download is complete and unchanged: if the value matches the one the publisher lists, the file is identical.