PDF, image, video, Office doc — drop it, get back a smaller one. Free, no watermark, no signup.
Drop any file here
PDF · Image · Video · DOCX / PPTX / XLSX
or click to browseUp to 100 MB · 200 MB for video
Compression
Files are never stored. Processed in memory, sent straight back.
PDF, image, video, or Office document — drag it onto the page or click to browse. No signup needed.
Choose Good quality, Smaller, or Smallest. Or set an exact target size like 2 MB or 500 KB.
Your compressed file is ready in seconds. Download it, preview it, or email it directly.
CompressThis is a free online tool that makes PDFs, images, videos, and Office documents smaller. It works entirely in your browser and on our servers — no software to install, no account to create, and no watermark on the output. Files are processed in memory and never stored.
For PDFs, CompressThis uses a two-pass approach: first it strips unused objects and recompresses streams (fast, lossless), then it resamples embedded images at a lower resolution if needed. For images, it re-encodes at optimized quality settings. For video, it uses FFmpeg with H.264 encoding. For Office documents (DOCX, PPTX, XLSX), it compresses the embedded images without touching text or formatting.
You can compress to three preset levels — Good quality, Smaller, or Smallest — or set an exact target size. Common targets include 2 MB for Common App uploads, 4 MB for USCIS, 25 MB for Gmail attachments, and 10 MB for LinkedIn.
Need to convert a file to PDF first? PDFThis converts images, Office documents, and web pages to PDF — then bring it here to compress.
Compress a PDF for USCIS
Under 12 MB, without losing the text.
Compress a PDF for Common App
Under 2 MB. Your transcript, not a thumbnail.
Compress a PDF for email
Under 25 MB for Gmail, 20 MB for Outlook.
Compress a PDF to under 2 MB
Common App, NVC, LinkedIn, resume portals. One tool.
Compress a PDF to 500 KB
For tight upload limits that won't budge.
Compress a PDF to 100 KB
For the tightest upload limits.
Compress a PDF for Workday
Fix the resume upload error in one step.
Compress a PDF for NVC
Under 2 MB. Passes the 'Invalid Image' check.
Compress a PDF for LinkedIn
Fix the resume upload error instantly.
Why is my PDF so large?
Five reasons — and the fix for each.
Yes. CompressThis is completely free with no file limits per day, no signup, and no watermark on the output. We support PDFs up to 100 MB and videos up to 200 MB.
No. Files are processed in memory and sent straight back to your browser. Nothing is stored, logged, or accessible after your session. Video files use temporary disk storage during FFmpeg processing and are deleted immediately after.
PDF, JPEG, PNG, WebP, HEIC, GIF, MP4, MOV, AVI, MKV, WebM, DOCX, PPTX, and XLSX. If you need a format we don't support yet, drop it on the page and use the request form.
It depends on the file. PDFs with large scanned images typically compress 50–80%. Phone videos compress 70–90%. Images compress 30–60%. Pre-optimized files may not compress further — the tool will tell you honestly.
Yes. Check 'Compress to a specific size' and either pick a preset (like Under 2 MB) or type any custom size. The tool will find the right compression level to hit your target.
Slightly, depending on the mode. Good quality mode is nearly indistinguishable from the original. Smaller and Smallest modes reduce resolution and quality more aggressively. For PDFs, text is never affected — only embedded images are resampled.