Compress a PDF online.

AI-smart compression in 3 seconds. Same quality, smaller file.

Drop your PDF here

check Free to start
check No signup needed
check Lossless quality

or drag & drop · PDFs up to 1 GB

PDFMulti-fileBatchlock 256-bit SSLauto_delete Deleted in 1hverified_user GDPR & CCPA

TrustpilotTrustScore 4.8 · 5,247 reviews

28 MB →4.5 MB. Visually identical.

Our AI keeps text crisp, downsamples images smartly, and strips invisible bloat. You won’t see the difference. Your inbox will.

Before · original28.0 MB

east

After · compressed4.5 MB

check83.9% smaller · pixel-equivalent on screen · print-ready at 300 DPI · OCR text layer preserved

Made for real-world limits

Fits every upload cap
you actually run into.

We compress to the exact ceiling your portal demands — not just to a generic “medium.”

mail

25 MB

Gmail & Outlook

The single biggest pain point. Get under the inbox cap on the first try, every time.

check Auto-targets 24 MB

account_balance

5 MB

Government portals

Tax, court and licensing portals worldwide cap attachments low. We hit the limit without losing detail.

check Auto-targets 4.8 MB

local_shipping

25 MB

Courier & shipping

Commercial invoices, shipping labels, customs forms — under DHL, FedEx and UPS upload caps.

check Print-ready 300 DPI

flag

6 MB

Visa & immigration

Schengen, work visa and residency portals worldwide — supporting docs sized to fit without resaving photos.

check Photos preserved

school

10 MB

ATS & job portals

CVs, transcripts, portfolios — sized for LinkedIn, Workday, Greenhouse and the recruiter portals that reject the rest.

check Bookmarks intact

auto_awesome

Any cap

Or set a custom target

Type the exact MB your portal requires. Our AI hits the number on the first pass — not the third.

bolt AI-precise

Real moments

When the cap is unforgiving.

Three people, three deadlines, three files that wouldn’t upload — until they did.

scheduleCourt e-filing · 25 MB cap

Legal brief was 41 MB. Cap is 35.

Down to 18 MB in 4 seconds. PDF kept, signatures intact. Filed at 11:55 PM — with 5 minutes to spare. Léa P. · Paris.

trending_down41 MBarrow_forward18 MB

scheduleEmail · 25 MB cap

Six-figure proposal bounced.

Compressed to 9 MB. Pitch deck still print-perfect. Client signed Monday. Marcus O. · Berlin.

trending_down62 MBarrow_forward9 MB

scheduleVisa portal · 6 MB cap

Scanned passport was 14 MB.

Brought down to 4.8 MB. Photo & OCR clean, no resubmit, no delay. Priya M. · Singapore.

trending_down14 MBarrow_forward4.8 MB

One workspace · 24+ tools

Need to do something else with your PDF?

Edit, sign, convert, merge, OCR — every PDF task in one place.

Real reviews from real users.

Trustpilot

TrustScore 4.8Based on 5,247 reviews

"HMRC portal finally accepted my return."

Spent 20 minutes trying to upload my Self Assessment at 12 MB. Got it under 5 MB with one click. Filed before the deadline, with the timestamp to prove it.

Léa P.

Consultant · London, UK

"Cut my Adobe bill in half."

Was paying €20/month for Acrobat just to compress contracts before emailing. Switched to this for compression and use Edit when needed. Same result, smaller bill.

Marcus O.

Founder · Berlin, Germany

"Pitch deck finally landed in the inbox."

62 MB to 9 MB, no loss. Six-figure proposal that kept bouncing back finally went through. Client signed by Monday.

Priya M.

Designer · Singapore

Quick answers, plainly put.

Don’t see your question? Our team replies within 2 hours, 7 days a week.

chat Chat with support

For 99% of files, yes — pixel-equivalent on any screen. Our AI keeps text as vector (never rasterized) and downsamples images intelligently. If you choose Strong (−90%), expect a slight softening on photo-heavy pages; for Light and Medium, the difference is invisible.

Yes. If your PDF already has an OCR text layer, we preserve it. If you upload a flat scan, we can optionally run OCR before compressing so the output is both small and searchable.

Always. The text layer is independent of the image layer, so compressing images never breaks Ctrl-F or screen readers.

Yes. Use the AI Auto preset and type the exact number (“4.8 MB”, “under 5 MB”). The AI analyzes your file’s content mix and picks a strategy that lands on the number on the first try.

Yes. Digital signatures, ESIGN/UETA-compliant eSignatures, form fields, annotations, hyperlinks, bookmarks and metadata all survive compression untouched.

Up to 100 MB on mobile and 1 GB on desktop. For large legal exhibits or scanned discovery batches, drop them in batches — we’ll process them in parallel.

Certified & auditedSOC 2 Type IIGDPR compliantISO 27001HIPAA-readyeIDAS · ESIGNPCI DSS

Compress your PDF. Free.
In 3 seconds.

Drop the file. We pick the level. You hit the upload cap on the first try.

bolt Compress in 3 seconds

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