PDF Compress

Unsupported input

The tool may reject input that does not match the expected content, structure, or file type.

Fix: Confirm the tool input requirements and paste the correct type of data.

Incomplete values

Missing fields or partial content can block processing or produce weak results.

Fix: Provide the full required input before running the tool.

Copying placeholder content

Sample or placeholder values can lead to output that looks valid but is not ready for real use.

Fix: Replace placeholders with your actual values before relying on the result.

Will PDF Compress reduce image quality in my document?

Only if you pick Screen or eBook mode — both downsample images (to 72 DPI or 150 DPI respectively) for big size savings. Print mode and higher custom settings keep images at 300 DPI, which is press-quality. Text and vector content is never re-encoded, so those parts lose no quality at any setting.

How much can I expect to shrink a typical PDF?

Image-heavy documents (scans, presentations, photo portfolios) usually drop 50–80% using the Screen or eBook preset. Text-heavy documents that are already optimized shrink 10–25%, mostly from font subsetting and redundant-object stripping.

Does PDF Compress preserve searchable text and selectable content?

Yes. Text and vector drawings are never rasterized or re-encoded. After compression the PDF is still fully searchable, copy-paste works on text, and screen readers can still extract the content tree.

Can I compress a PDF that came from a scanner?

Yes, and that's where the biggest gains are. Scanners often embed 300 DPI images at low JPEG quality; re-downsampling to 150 DPI with quality 80 typically cuts file size by 60% without visible degradation at normal viewing distance.

Does compression strip form fields or annotations?

Form fields and annotations are preserved by default. A separate toggle lets you strip them explicitly (useful before archiving). Unused objects that no page references are always removed — that's usually where the 'redundant object' savings come from.

Is my uploaded PDF stored on the server?

No. The file is held in a transient processing directory that's wiped as soon as the response is returned. There's no indexing, no retention, and no logging of file contents.