500 KB is a sweet spot. Tight enough to satisfy strict portals, loose enough to hold quality on documents with photos.
Most PDFs can be compressed to 500 KB without visible loss. Some need a bit more aggression.
Use medium compression first
Open the file in Flint's compressor at Medium. For 2-5 MB documents, this typically lands between 300-700 KB — sometimes under 500, sometimes just over.
If just over, run a second pass at the next level up. Don't over-compress in one go.
When you need a bit more shrinkage
If Medium isn't enough, try High. Most multi-page documents survive High with minor softening on photos but no impact on text or graphics.
For documents with key photos (ID scans, headshots), check the result at the size it'll be viewed. Often the visible quality is unchanged.
What to remove if still over
Strip metadata, unused fonts, attachments. Delete pages that aren't essential.
If the PDF still won't compress under 500 KB, the source has more content than fits in that size at decent quality. Re-export the source with lower resolution.
FAQ
Is 500 KB realistic for a multi-page report?
Yes — most text-heavy reports of 10-30 pages sit comfortably under 500 KB after Medium compression.
Will photos look acceptable at 500 KB?
Usually yes. Headshots and ID scans look fine at the size they'll be viewed. Hi-res product photos may show softening.
Can I batch compress multiple PDFs to 500 KB?
Yes — Flint's compressor handles batches. Each file is processed individually with the same settings.
Does 500 KB still print at print quality?
For text and vector graphics, yes. For photos, you may see slight loss when printed large. For email or screen, the print quality is fine.
500 KB is a comfortable target for most documents. Compress yours and check the before/after.