Compress a PDF to 900 KB
Limits around 900 KB are common on job and university application portals. Most CVs and cover letters already fit; scanned certificates and diplomas often don’t. FitsUnder re-compresses the scanned pages so the text stays readable and the file passes the 900 KB check.
The file will be made smaller than this size.
Uploading a CV? Its text stays selectable after compression, so applicant tracking systems can still read it.
Other limits
What happens to your file
It stays on your device
FitsUnder runs inside your browser. The file is read, compressed and saved on your own computer or phone — it is never sent anywhere. That makes it safe for passports, contracts and medical records.
Quality comes first
Other compressors make you guess between “low”, “medium” and “high”. FitsUnder starts from the best quality and steps down only as far as your limit requires. Resolution is reduced only when that alone isn’t enough.
PDF text stays text
In a PDF, only the pictures are re-compressed. Text, fonts and links stay as they were, so the document can still be searched and copied. Pages become images only as a last resort, and you’ll see it in the result.
Questions
Is 2 MB 2,000,000 bytes or 2,097,152 bytes?
Websites use both. FitsUnder always aims for the smaller number — 2,000,000 bytes for 2 MB, 200,000 bytes for 200 KB — so the file passes whichever one the form checks.
Will my file look worse?
Only as much as the limit forces. FitsUnder starts from the highest quality and steps down until the file fits, and reduces resolution only when lower quality alone would look bad. Compare before and after in the preview before you download.
Can I still select the text in my PDF?
Usually yes. FitsUnder compresses the pictures inside the PDF and leaves text, fonts and links untouched. Only when a limit is too small for that does it turn pages into images — and it tells you when that happens.
Is it safe for passports and contracts?
Yes. Your file is read and compressed by your own browser and saved straight back to your device. It is never sent to a server, so nobody else can see it.
Is it free?
Yes. No sign-up, no watermark, no daily limit.