Compress PDF to 300 KB
Compress a PDF to 300 KB when a portal accepts one file for a whole set of documents: up to about eight scanned pages stay readable at this size.
When 300 KB is the right target
Forms that want "all supporting documents in one PDF" often set limits around 300 KB: a filled application plus a few certificates, a rental file, or a set of payslips. The challenge is not one big image but many pages, so the size has to be shared fairly between them. The tool treats every image the same way, so no single page ends up much blurrier than the others.
What fits in 300 KB
- Four to eight scanned pages with readable text.
- A filled form plus two or three certificates, merged into one file.
- A report of 100 pages or more if it is mostly text.
- Three color pages with photos at good quality.
Building one file from several documents
- 1Merge the documents first with Merge PDF, then compress the merged file to 300 KB in one go.
- 2Remove blank backs of single-sided pages with Remove blank pages; each blank scan still costs space.
- 3Put the most important document first: reviewers read the first page most closely.
Questions about compressing to 300 KB
Is it better to compress each file and then merge, or merge first?+
Merge first, then compress. The target then applies to the final file, and duplicate fonts or logos shared by the documents are stored only once.
Why did some pages stay sharper than others?+
Pages that are mostly text are not images, so they are never reduced. Only scanned or photographed pages are resized.
Can I see the result before downloading?+
After compressing, the result panel shows the final size; open the downloaded PDF to check readability. You can try again with a larger target in one click.
Does compression remove my form fields or links?+
No. Form fields, links and bookmarks are kept. Only hidden extras such as metadata and accessibility tags may be removed to save space.