Help & setup
Filebender help.
Filebender turns a file into the one you need: a different format, a smaller size, or new dimensions. Here is every part of it, in the order you’ll meet them.
Filebender is live at filebender.rabbitlabs.app. It’s free, there’s no account, and files are deleted an hour after they’re converted. The Google Workspace add-on, for converting straight from Drive and Gmail, is coming to the Workspace Marketplace.
Open FilebenderStep one
Getting started.
In any browser
Open filebender.rabbitlabs.app, or a converter for one job, like HEIC to JPG or the PDF compressor.
Drop files on the box, press Choose files, or paste an image. The arrow next to Choose files adds them from Google Drive or from a link instead.
Pick what each file becomes in its row, or use Convert all to for the lot, then press Convert.
Download each file, or Download all (ZIP). The files are deleted an hour later.
Adding files
Each file gets a row as soon as it’s added. Filebender uploads it, checks what it really is (a PNG named .jpg is treated as a PNG, and it tells you), and lists what it can become. Files that can’t be converted, like a copy-protected ebook or a damaged video, are refused in that row with the reason, before anything runs.
Up to 20 files convert together, each up to 1 GB. Add more and they run as several batches. An archive (ZIP, RAR, 7Z, TAR) has What’s inside, so you can convert the files in it without unpacking it first.
The settings
The gear on a row changes that one file; Settings above the list changes all of them. Only the settings that apply to the files you’ve added are shown: Size (exact pixels, percentage, longest side, aspect ratio, social sizes and icon sets), Compression (a quality, an exact target size, or lossless), Video and audio (codec, frame rate, bitrate), PDF (page size, image resolution), the fill colour for transparent areas, and whether to keep photo details.
Presets fill in the settings for a purpose, like Web, Email or Print, and everything stays editable. Save as preset keeps your own in this browser.
Compressing and resizing
The Compress and Resize pages put their one control up front. Compress keeps each file’s format and makes it smaller: Light, Balanced and Strong, or Exact size, which lands within 10% under the size you give and never over. If a size can’t be reached, a long video in 5 MB say, Filebender says so before starting and names the smallest it can do.
Resize takes a percentage, a width and height, or a preset size, and shows the result’s dimensions before you convert. Making something bigger can’t add detail, so it warns you when a size would enlarge a file.
Results and downloads
Each file shows its progress while it converts, then its size before and after, what was removed (location data from photos, scripts from SVGs), and a Download button. Download all (ZIP) takes everything in one go. A file that fails doesn’t stop the others, and says why it failed.
If a converted file comes out bigger than the original, Filebender asks which to keep. Delete files now deletes them straight away instead of in an hour. Your conversions from the last 24 hours are in History, with their downloads while the files last.
Google Drive
From Google Drive (under the arrow next to Choose files) opens Google’s own file picker. Filebender can only see the files you pick there, nothing else in your Drive. Google Docs, Sheets and Slides convert too.
In the settings, Also save results to Google Drive puts each converted file next to its original, or in a folder you choose, without overwriting anything. Files from Drive can also replace the original, which moves the original to Drive’s trash for 30 days rather than deleting it.
Nothing hidden
What it asks for, and why.
Filebender only gets what you hand it, so here is everything it touches, in plain words.
- The files you add
- Uploaded to Rabbit Labs’ servers on Google Cloud, converted there in a locked-down container with no internet access, and deleted an hour after converting (or when you press Delete files now). Files you add but don’t convert are deleted after an hour too.
- Google Drive (optional)
- Only when you use it, and only the “files you choose” permission: Filebender sees the files you pick in Google’s picker and the ones it saves for you. Your Google sign-in stays in your browser tab and is sent only with the Drive requests that need it.
- A session cookie
- Ties your conversions and History to this browser, so nobody else can see them. It isn’t used for anything else, and there are no analytics or advertising cookies.
- Your IP address
- Counted, as a salted hash that changes every day, towards the free daily allowance, so the service stays free. Google Cloud’s request logs keep the address itself for up to 30 days, for security.
Common questions
When it doesn’t behave.
Is it really free?
Yes. There’s no account, no watermark and no paid tier. The free allowance is 30 minutes of conversion time and 5 GB of uploads a day, which resets at midnight UTC.
Can anyone else see my files?
No. Your files are tied to your browser’s session, and the download links are long random links that stop working when the files are deleted, an hour after converting. Nobody at Rabbit Labs looks at them.
Why did my file fail?
The row says why, and what to try: a damaged or copy-protected file, a scanned PDF with no text to turn into a Word document, or a size that can’t be reached. If it says the converter stopped unexpectedly, try again or try a smaller file, and tell us if it keeps happening.
Which formats does it handle?
Images (JPG, PNG, WEBP, AVIF, HEIC, GIF, TIFF, BMP, ICO, PSD and camera RAW), vector art (SVG, EPS, AI, PDF), video (MP4, MOV, MKV, WEBM, AVI and more), audio (MP3, WAV, AAC, FLAC, OGG and more), documents, spreadsheets, presentations, ebooks and archives. Add a file and its row lists exactly what it can become.
Does it work on a phone?
Yes. It’s a web page, so it works in any modern browser, on a phone or a computer.
Can I convert a file from a link?
Yes: the arrow next to Choose files, then From a link. Filebender downloads it (up to 1 GB) from any public address. Links that need a sign-in, and addresses on private networks, can’t be opened.
Still stuck
Ask us directly.
Send us the site, the browser and what you expected to happen, and we’ll pick it up. The contact page writes the email for you, or you can take the address and write to us yourself.
support@rabbitlabs.app