Compression Tools
Compression tools: reduce PDF, image, and Office file size
Shrink PDFs, photos, Word files, and PowerPoints to fit an email or upload limit, including KB and MB size targets. Free, with no sign-up.
Upload forms, email systems, and websites all set size limits, and the right way to shrink a file depends on what's inside it. Photos compress by lowering quality or dimensions, PDFs shrink mostly by re-encoding the images they contain, and Office files hold embedded media that can be reduced separately.
Where a tool works toward a target, it measures the real result and tells you the size it reached, including when the target can't be met without ruining the file.
All compression tools
- Compress ImageShrink image file size to a target limit, with the quality tradeoff shown.
- Compress PDFReduce PDF file size (best-effort: image re-encoding and metadata cleanup).
- Compress WordReduce a Word document's file size by re-encoding its embedded images.
- Compress PowerPointReduce a PowerPoint presentation's file size by re-encoding its embedded images.
- Compress PDF to a Size LimitShrink a PDF to fit under a maximum size in KB or MB, with the achieved size shown.
- Batch Image CompressorCompress many images to the same target size at once, with a ZIP and individual downloads.
How much can a file shrink?
It depends on the content. Photo-heavy PDFs and PowerPoints shrink a lot, while text-only PDFs are already compact. Reducing to a very small target costs quality, so start with the limit you actually have rather than the smallest number possible.
Recommended workflows
Fit a scanned PDF under a portal's limit
- Compress the PDF to the size the portal allows. Compress PDF to a Size Limit
- If it's still too big, split it into parts. Split PDF
Shrink many photos for one upload
- Compress the whole batch to a single KB target. Batch Image Compressor
Guides
- How to Compress a PDF to a Specific Size (100 KB, 500 KB, 2 MB)
Portals and forms often cap a PDF at an exact size. Here's how to get a document under 100 KB, 500 KB, 1 MB, or 2 MB without deleting pages you need.
- How to Compress a PDF Without Losing Quality
Why PDFs get bloated, what actually shrinks them, and how to reduce file size without making text blurry or images unreadable.
- How to Compress a PowerPoint That's Too Big to Email
Why .pptx files balloon to 40 MB and four free ways to shrink one for email: a one-click compressor, PowerPoint's own settings, or routing it through PDF.
- How to Reduce a Photo's File Size for an Online Form
Visa, exam, and job portals cap photo uploads at sizes like 100 KB. Here's how to get a photo under the limit while keeping it clear enough to be accepted.