Compress PDF – Free Online PDF Compressor (No Watermark)
Shrink bloated PDFs into lightweight files that still look crisp on every device.
Upload files
Drop a single PDF up to 20MB, and we will rebalance fonts and images without hurting readability.
Drop your PDF here or click to browse
or drag & drop
Max size 20MB.
MyPDFHero’s PDF compressor is designed for the exact scenarios people stress over: admissions portals that reject files above 5 MB, HR systems that want a single attachment, and collaboration tools that complain when you upload a deck from your phone. The engine balances font subsetting, vector cleaning, and smart downscaling so you keep legibility while slicing the file size dramatically. Everything runs inside your browser session with zero logins and no watermark on the finished document.
Because the workflow mirrors the audits we perform for enterprise clients, the compressor understands print versus screen intent, maintains color profiles for branding teams, and auto-detects scanned pages to remove the gray background haze. You can trust the output for legal packets, classroom submissions, and visa paperwork. When the job finishes, your files are deleted automatically, making this a safe daily helper for freelancers, students, and corporate operators alike.
Features of MyPDFHero PDF Compressor
High-quality compression
Adaptive image sampling and font optimization keep charts, signatures, and annotation layers intact.
Email-ready sizes
Smart presets aim for 1–5 MB exports so you can send the PDF through Gmail, Outlook, or ATS portals.
Scanned PDF cleanup
Removes scanner noise and flattens background textures to reclaim extra megabytes.
Secure + temporary
Encrypted uploads auto-delete minutes after completion, satisfying internal compliance needs.
Works everywhere
Optimized for mobile browsers so you can rescue a bloated PDF from iOS, Android, or Chromebooks.
How to Compress PDF Online (Step-by-Step)
- Step 1
Upload the PDF
Drop or browse for your file (up to 20 MB) and confirm it appears in the queue.
- Step 2
Let optimization run
Our engine analyzes fonts, images, and vector layers to decide the lightest lossless settings.
- Step 3
Watch the progress meter
You’ll see a live compression percentage and tips like “Preparing for email-size export.”
- Step 4
Download instantly
Grab the optimized PDF with no watermark and attach it to email, LMS, or HR portals.
Compress PDF FAQs
How do I compress a PDF without losing quality?
Upload the original file, keep it under 20 MB, and let MyPDFHero’s adaptive presets handle the balancing act. We only reduce resolution when the page type can handle it, so charts and text stay crisp.
Will the PDF look the same after compression?
Yes. Fonts, layout, signatures, and form fields remain identical because the tool does not rasterize text layers.
Can I compress a scanned PDF?
Absolutely. The compressor targets background noise and gradients common in scans, reclaiming megabytes while keeping stamps legible.
Is there a watermark or footer?
No. Every export is a clean PDF with no watermark, so you can share it with clients or upload to government portals.
How small can you make my PDF for email?
Most documents land between 0.5 MB and 3 MB, which satisfies Gmail, Outlook, and job application portals that cap attachments at 10–25 MB.
Do you store my compressed PDF?
No. Files are deleted automatically minutes after processing or as soon as you close the tab, whichever comes first.
Can I compress multiple PDFs at once?
This tool currently handles one file at a time to guarantee the best result, but you can immediately queue another document after downloading the first.
Does it work on phones?
Yes. The UI is tuned for mobile browsers, so you can compress a PDF directly from iOS Files, Android storage, or Chromebook downloads.
Switch tools
Continue working with the rest of the MyPDFHero toolkit.
Expert guides
Dive deeper with long-form blog posts that build topical authority and answer real user questions.
How to Compress a PDF Without Losing Quality
Covers the ideal export settings and troubleshooting advice for stubborn documents.
5 Ways to Make a PDF Smaller for Email
Walks through multiple approaches including desktop apps and MyPDFHero.
How to Reduce PDF Size Below 1 MB
Perfect for scholarship, visa, or grant portals with strict size limits.