Compress PDF to 100 KB
Shrink PDF file size while keeping the best quality possible.
Runs in your browser — files never leave your device
or drop files here
How to compress a PDF to 100 KB
Some portals cap every upload at 100 KB. This page is set to find the sharpest version of your PDF that still fits. One- or two-page scans usually fit easily; for longer documents, upload only the pages the form asks for.
Add the PDF (or several).
Check that 100 KB is selected, or type another limit.
Click Compress PDF and download the file that fits.
Where the 100 KB limit comes from
100 KB is the most common hard cap on government, examination and recruitment portals, usually per uploaded document. A one- or two-page scan fits comfortably; a five-page scan is possible but the text gets soft. Typed PDFs, such as a CV exported from a word processor, are often already under 100 KB and come back unchanged apart from lossless clean-up.
This page sets Target file size to 100 KB for you. The result is checked against 100,000 bytes, so it also passes on portals that count 1 KB as 1,024 bytes.
Keeping the text readable
The compressor lowers image quality first and only then reduces resolution, so small print survives as long as possible. Before you upload, open the result and zoom in on the smallest text, such as a serial number or a date stamp. If it is not legible, remove pages the form did not ask for with Remove Pages, or split the document and upload the parts separately if the form allows several files.
Compress PDF to 100 KB FAQ
Scans of up to a few pages usually do. Long documents may not, because every page takes some space; remove the pages the form doesn't need first.
You get the smallest version possible and a message saying how big it is, so you can decide whether to remove pages or split the file.
At 100 KB, scanned pages are resampled to a lower resolution, so check small print before you submit. Text that isn't scanned stays perfectly sharp.
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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