Compress PDF Online
Reduce PDF file size right in your browser. Pick a quality level, name a target like 200KB, or keep your text selectable. Nothing uploaded, no sign-up.
Drop your PDFs here
or click to browse. Compress one PDF or a whole batch.
Compress PDF Files Without Uploading Them
Shrink contracts, brochures, scans, and reports without sending a single byte to a server.
Compress a PDF to an Exact Size
Type the size you need and the tool searches for the quality that fits it. Quick targets for 100KB, 200KB, 500KB, and 1MB, or enter any custom value in KB or MB.
Three Quality Levels With Size Estimates
Low keeps print-grade quality, Medium suits everyday sharing, High pushes for the smallest file. Each level shows an estimated output size for your file before you commit.
Keep Text Mode for Selectable Text
Need selectable text, links, and form fields to survive compression? Keep text mode re-saves the document with compressed object streams instead of turning pages into images.
Before and After Preview
A slider compares the original page with the compressed one at full zoom. Check that the fine print is still readable before you download.
Batch Compress PDF Files, Free
Drop in as many PDFs as you like. Each one compresses in turn with its own progress bar, then download files individually or grab them all as a single ZIP.
Your Files Stay on Your Device
PDFs are processed entirely in your browser, so nothing is uploaded anywhere. No file size cap, no account, no watermark. Suited to contracts and anything under an NDA.
Who Needs to Reduce PDF File Size
Anyone who has been told "file too large" by an email provider or an upload form.
Upload Forms With Size Caps
Visa portals, job applications, and government forms set hard per-file limits and reject anything over them without much explanation.
- Compress a PDF to 100KB for a visa form
- Fit a CV under a 200KB cap
- Meet 500KB court e-filing rules
Reduce PDF Size for Email
Keep PDF attachments under a 25MB Gmail cap or a 20MB Outlook limit without losing pages or content.
- Fit 25MB Gmail attachment limits
- Squeeze brochures under Outlook caps
- Shrink invoices for client emails
Storage, Archives, and Web Publishing
Cut cloud storage costs, speed up syncs, and give visitors whitepapers and e-books that download quickly on mobile data.
- Compress scanned paperwork for archiving
- Speed up team Dropbox syncs
- Cut download time for gated PDFs
How to Compress a PDF in 3 Steps
Drop one PDF or a batch onto the upload area, or click to browse and select files from your device.
Choose a quality level, set a target size, or switch to Keep text mode. Grayscale is available for scanned paperwork.
Press Compress, check the before and after preview, then download your smaller PDF or the whole batch as a ZIP.
Explore More Tools
Discover other free tools that work great alongside this one
Compress PDF to 100KB
Hit a strict 100KB upload cap on government and visa forms
Compress PDF to 200KB
Fit job portals and university applications that cap at 200KB
Compress PDF to 500KB
Meet the 500KB limit used by court e-filing and tender portals
Compress PDF to 1MB
Get reports and contracts under a 1MB attachment limit
PDF Merger
Combine multiple PDFs into one document
PDF Splitter
Split a PDF into individual pages or custom ranges
PDF to Image
Export PDF pages as JPG or PNG images
Image to PDF
Convert JPG, PNG, WebP images to a PDF document
Image Compressor
Reduce file size without losing quality
Frequently Asked Questions
Answers to common questions about how to compress a PDF file online.
How do I compress a PDF file to make it smaller?
Upload your PDF, pick a quality level or a target size, and press Compress. The tool renders each page and rebuilds the file at a smaller size, all inside your browser. How much it shrinks depends on the content: image-heavy files and scans compress far more than text-only documents.
Is it safe to compress a PDF online?
Yes. This tool never uploads your file to a server. All compression runs in your browser using JavaScript and the Canvas API, so your PDF never leaves your device and no data is sent anywhere.
Does compressing a PDF reduce quality?
In the quality preset and target size modes, yes, since pages are rendered as images to shrink the file. Low keeps print-grade detail, Medium suits everyday sharing, and High trades more quality for a smaller file. Use the before and after preview to check the result before downloading.
How can I compress a PDF to 100KB?
Switch to target size mode and tap the 100KB chip, or type a custom value. The tool samples a few pages to estimate sizes across a quality ladder, picks the sharpest setting that fits, and aims slightly under 100KB since upload forms often reject files sitting right on the limit. If your file cannot reach 100KB, it shows you the smallest size it did reach instead of failing.
How do I compress a PDF without losing quality?
Use Keep text mode. It re-saves the document with compressed object streams instead of rasterizing pages, so text stays selectable, links and form fields survive, and nothing is redrawn as an image. Savings are smaller than the quality presets, typically 20 to 30 percent, because the size reduction comes from structure, not image compression.
Can I compress multiple PDFs at once?
Yes, with no file count limit and nothing behind a paywall. Drop in a batch and each file compresses in turn, which keeps memory use safe on phones and older laptops. Download any finished file on its own, remove one from the queue, or take them all as a single ZIP.