How to compress a PDF under 10 MB
Choose your PDF in Compress PDF, start with Balanced quality, and compare the preview output with your 10 MB target. If it is still too large, repeat with the Smallest setting. Exact output size depends on the source and cannot be guaranteed.
Step by step
- 1
Open Compress PDF and choose one PDF.
- 2
Select Balanced quality first, then create and inspect the result.
- 3
If the result remains above 10 MB, retry with Smallest quality or split out pages you do not need.
Why PDFs get so large
Most oversized PDFs are large because of images. A scanned page is a full-resolution picture, and a document with photos, screenshots or embedded graphics can reach tens of megabytes quickly. Plain-text PDFs are usually small, so they gain little from compression.
Many upload portals, email services and application forms cap attachments at 10 MB or less, which is why a target like 10 MB comes up so often.
A practical order to try
Start with Balanced quality and look at the size shown in the preview. If it is still above your limit, try Smallest quality. If it still does not fit, split the document into two parts with Split PDF, or remove pages the recipient does not need with Delete PDF Pages, then compress again.
Always compare the preview with the original before downloading. Very small text can soften at lower quality, so check that anything important is still readable.
What compression changes
PDF Eye compresses by re-rendering each page as an image at your chosen quality. That is why it can make scans dramatically smaller, but it also means selectable text, links, forms and interactive annotations are not kept in the compressed copy. Keep your original file if you need those features, and use the compressed version only for sharing or submitting.
Important limitations
- Compression rebuilds pages as images, removing selectable text, links, forms, and interactive annotations.
- Already optimized PDFs may not become much smaller.
- Keep an original copy when searchable text or forms matter.
Common questions
Can PDF Eye guarantee my PDF will be under 10 MB?
No. The final size depends on the content of your document. Use the preview to check the size before you download.
How do I compress a PDF to 1 MB?
Use the Smallest setting and, if necessary, split the document or remove unneeded pages. Very long or image-heavy PDFs may not reach 1 MB in a single file.
Is my PDF uploaded when I compress it?
No. Compression is performed in your browser, and PDF Eye does not upload or store your document.
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Last reviewed September 20, 2026. Product behavior and limitations on this page match the linked PDF Eye tools. Written by the PDF Eye Team; PDF Eye is operated by SweetMobile. Learn more about PDF Eye or contact support.