Troubleshooting
What to do when a PDF compressor makes your file bigger
A compression attempt can produce a larger candidate. Compare the actual bytes and check which file was saved before deciding what to send. A completed attempt is not proof of a useful reduction.
Published · Updated · 4 min readA completed attempt, but no smaller file
- Original PDF
- 56,145,669 bytes
- Attempted candidate
- 56,159,149 bytes
- Size change
- +13,480 bytes
Source: NASA FY 2017 Agency Financial Report (PDF). The original was 56,145,669 bytes across 154 pages.
Test target: 1,024 bytes. Deliberately unattainable negative-test target, not a practical compression target.
Original unchanged. No compressed output was created.
BitePDF local MCP source bundle 0.1.1 · PDF object-stream re-serialization, no page rasterization. One local engineering check; not a representative benchmark or website-compression result.
Read the measurement and its limits →Compare the original, candidate and saved output
Keep the original until you have reopened and reviewed a useful copy. A rounded size label can hide a small increase. Compare exact bytes when an upload limit is strict.
An attempted candidate is not necessarily a saved output. Check whether the tool actually created a file, then reopen that file. A smaller byte count alone does not establish readable text, working links or valid signatures.
One local repacking attempt that did not help
On 27 October 2026, we checked the published BitePDF local MCP 0.1.1 package with NASA’s public FY2017 financial report: 154 pages and 56,145,669 source bytes. Object-stream repacking produced a 56,159,149-byte candidate, an increase of 13,480 bytes. The tool wrote no compressed output and left the original unchanged.
This was one existing public document and one local method, not the website’s compression engine, a representative benchmark, or a quality comparison. It does not prove why the file grew or whether another method could help. The test’s 1,024-byte target was deliberately unattainable for a refusal check, not a practical target for this report.
Choose the next step without buying blindly
If the original already meets the receiving limit, keep it unless another change is needed. Buying access does not make that file smaller. If the prepared copy does not help your task, do not treat payment as a compression fix.
If it still does not fit, remove only pages the recipient does not require or compare an image-reduction sample before processing the whole file. Preserve important text and form behavior, and review the actual result. If those trade-offs are unacceptable, ask the recipient for an approved alternative.