Compress PDF to 30 KB
Shrink PDF file size while keeping the best quality possible.
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How to compress a PDF to 30 KB
A 30 KB cap leaves room for one lightly scanned page, such as a black-and-white certificate or a signed undertaking. This page is set to 30 KB and works down from the sharpest setting until the file fits.
Add the PDF, keeping only the page the form asks for.
Check the size box shows 30 KB, or type the form's own number.
Click Compress PDF and zoom in on the result before you upload it.
One page, scanned lightly
A 30 KB limit is written with one page in mind. Forms that use it tend to ask for a single supporting sheet: a birth or category certificate, a fee receipt, a signed undertaking. At 30 KB that page stays legible when it was scanned in black and white at a modest resolution, because pure black-and-white pages compress far better than greyscale or colour ones. Body text and handwriting survive; pale stamps and embossed seals are the first details to fade.
The page sets Target file size to 30 KB and checks the result against 30,000 bytes. Whether a scan passes is decided mostly at the scanner: the less background texture and colour the page image carries, the less the compressor has to remove.
When the certificate has a photo or a seal
Certificates that carry a passport photo, a hologram or a coloured seal are the hard case, because those areas need far more data than text does. Crop the page to the certificate's border with Crop PDF, so that no bytes are spent on blank scanner glass, and compress again. If the seal must stay visible and the note still reports a size above 30 KB, look in the form's instructions for a larger limit on that document type, or for an option to upload it as an image; a photographed certificate can then go through Compress JPG.
Compress PDF to 30 KB FAQ
A single page of dark text on white paper, scanned in black and white, usually does. Colour pages, photographs and stamps on a tinted background lose detail quickly at this size.
Usually because of an embedded logo, photo or letterhead image. The compressor re-encodes images and leaves real text sharp, so such files often fit with no change to the wording.
No. The tool runs entirely in your browser, so your files are processed on your own device and never leave it.
Yes. Every PDFCraftly tool is free, with no sign-up, no watermark and no email required.
Guides
- USCIS File Too Large? Compress a PDF Under 12 MB for Evidence UploadsUSCIS online accounts reject evidence files over 12 MB and password-protected PDFs. How to shrink a scan under the limit without uploading it anywhere.
- CEAC Document Upload: Get NVC Scans Under the 4 MB File Size LimitThe State Department's CEAC portal takes immigrant visa scans up to 4 MB each, in color, as PDF or JPG. How to compress an I-864 or civil document to fit.
- Compress a PDF for a UK Visa Application: UKVCAS, VFS Global and TLScontact Upload LimitsUKVCAS takes PDF, JPG and PNG files up to 7.25 MB each; VFS and TLScontact show their limit on the upload page. How to shrink visa documents to fit.
- Compress a PDF for a UK University Application: 2 MB, 4 MB and 5 MB Portal LimitsLSE and Edinburgh cap each upload at 2 MB, Oxford at 4 MB and UCL at 5 MB. How to compress transcripts, certificates and references to fit each portal.
- IRCC File Size Limit: How to Compress a PDF Under 4 MB for Your UploadIRCC accepts 4 MB per file in most online accounts and 5 MB in the IRCC Portal, one file per field. How to compress and combine PDFs to fit.
- ImmiAccount Attach Documents: How to Compress a PDF Under 5 MBImmiAccount accepts documents up to 5 MB each and up to 60 per person, and rejects encrypted PDFs. How to compress, merge and unlock files to fit.
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