Make files smaller without handing them to anyone.
DigiCompress compresses PDFs, Word documents, images, video and audio inside your browser. Your file never travels to a server, and it’s cleared from memory the moment you’re done.
- Works on PDF, DOCX, JPG, PNG, WebP, MP4, MOV, MP3, WAV and more
- 3 free files a day, no account needed
- 0 bytes uploaded
- No file storage
- Purged after download
- Signature-verified files
- No sign-up for 3 files a day
Four steps, all on your device
The compressor walks through the same four stages every time, and shows you each one as it happens.
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Step 1
Select
Drop a file or pick one. It’s read straight from your disk into this tab’s memory — no upload bar, because nothing is uploading.
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Step 2
Verify
DigiCompress checks the file’s signature bytes to confirm it really is a PDF, JPEG, MP4 or whatever it claims to be. Mismatches are rejected.
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Step 3
Compress
A background worker in your browser shrinks the file at the level you pick, so the page stays responsive while it runs.
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Step 4
Purged
Download the result. DigiCompress then releases the original and the output from memory and revokes the temporary download link.
Pick what you need to shrink
- Compress PDFStatements, contracts and scans, shrunk for email and upload portals.
- Compress imagesPhotos, screenshots and graphics, ready for the web or a message.
- Compress videoPhone clips and screen recordings re-encoded on your device.
- Compress audioVoice notes, interviews and music at a fraction of the size.
- Compress Word & OfficeDOCX, PPTX and XLSX files slimmed by compressing their images.
Why it matters where compression happens
Most “free online compressors” work by uploading your file to their servers, processing it there and sending a copy back. That’s fine for a meme. It’s a real risk for a payslip, a signed contract, a medical scan or an unreleased video.
| Question | Typical online compressor | DigiCompress |
|---|---|---|
| Where your file goes | Uploaded to a company’s servers | Never leaves your device |
| Who can read it | The service, its cloud host, and anyone who breaches them | Only you |
| How long it’s kept | “Deleted after 1–24 hours” — you have to trust that | Released from memory as soon as you’re done |
| File-type checks | Often trusts the extension | Verifies signature bytes before processing |
| What’s logged | Varies; file names are common | Anonymous counts only — never names or contents |
| Waiting time | Upload, queue, then download | No upload; your device starts right away |
What we can see, and what we can’t
Here is the complete picture, not the marketing version.
What we can see
- That a compression happened, and its file category and format (for example “pdf”)
- Size before and after, processing time, and whether it succeeded
- An anonymous random visitor ID stored in your browser
- Approximate country and city, worked out from your IP at the edge
- Device type and browser family
- Your email address — only if you choose to sign in
What we can’t see
- Your file, in whole or in part
- The file name
- Anything written, pictured or recorded inside it
- A fingerprint or hash of its contents
- Your raw IP address in our database (only a salted hash, for abuse limits)
- Any tracking or advertising cookies — there are none
The details are in how DigiCompress works and the privacy policy.
Frequently asked questions
Still unsure? Email hello@digicompress.com.
Are my files uploaded to a server?
No. DigiCompress compresses files with code that runs inside your browser tab. The file is read from your disk into memory on your own device, compressed there, and handed back to you as a download. There is no upload step, so there is no copy of your file on our servers — or anyone else’s.
Do you keep a copy of my file?
We can’t — we never receive it. Inside your browser, the original and the compressed result are held in memory only until you download or discard them. After that, DigiCompress releases the data and revokes the temporary download link, so the page itself no longer holds your file.
What file types can I compress?
PDF; Word, PowerPoint and Excel files (DOCX, PPTX, XLSX); images in JPG, PNG and WebP; video in MP4, MOV and WebM; and audio in MP3, WAV and M4A. Each tool page lists the details, for example compressing PDFs or compressing video.
Is DigiCompress free?
Yes. You can compress 3 files a day without an account. Sign in with Google or an email magic link to compress as many files as you like. We don’t sell anything inside the tool, and we never ask for payment details.
What does “signature-verified” mean?
Every file type starts with a few identifying bytes, called a signature or “magic bytes”. Before compressing, DigiCompress reads those bytes to confirm the file really is what its extension says. A renamed or corrupted file is rejected instead of being processed blindly.
What do you log when I compress a file?
Anonymous counters: the file category and format (for example “pdf”), the size before and after, how long it took, and whether it succeeded. We never record file names, contents, or fingerprints of contents. See what we can and can’t see for the full list.
How much smaller will my file get?
It depends on what’s inside. Photos, scanned PDFs and video usually shrink a lot — often by half or more. Files that are already compressed, such as small MP3s or text-only PDFs, have less room to shrink. DigiCompress shows the before and after size so you can decide whether to keep the result.
Why is it sometimes slower than upload-based tools?
Your own device does the work instead of a data centre. For images, PDFs and documents that usually takes a few seconds. Video is the heaviest job: re-encoding a long clip can take a while on an older device, but you skip the upload and download wait entirely.
Does it work on my phone?
Yes, in any modern browser on Android, iPhone, iPad, Windows, macOS, Linux or ChromeOS. Very large videos are limited by your device’s memory, so a laptop or desktop will handle the biggest files more comfortably than an older phone.
Your next file never has to leave your device.
Free for 3 files a day. Sign in for unlimited compressions — your files still stay with you.