All toolschevron_rightResult previewchevron_rightHow it workschevron_rightReviewschevron_rightLog inloginAnnotate a PDF

Annotate a PDF — highlight, comment, draw.

Highlight in 6 colours, leave sticky notes, draw freehand. Save once, share everywhere.

/

Drop your PDF to annotate

  • check 6 highlight colours
  • check Sticky notes
  • check Freehand drawing
PDFDOCDOCXJPGPNG
lock 256-bit SSLauto_delete Auto-deleted in 1hverified_user GDPR compliant
TrustpilotTrustScore 4.8 · 5,247 reviews
Plain PDF in. Marked-up PDF out.

Stop printing PDFs to highlight. Mark it once. Share it everywhere.

Research papers, contracts, study guides, lease agreements. Highlight key clauses, sticky-note your team, draw arrows where the math is wrong. Annotations are baked into the file and visible to anyone — even on the iPhone reader.

PDFreport.pdf · clean
screen_rotation Clean
draw Clean · no marks
PDFreport-annotated.pdf · marked up
check Annotated
check Marked up · saved
checkAnnotations baked in. Highlights, sticky notes, drawings and shapes saved as standard PDF annotations. Visible and editable in every PDF reader (Adobe, Preview, Chrome, mobile) — print-ready, share-ready.
3 steps · 5 seconds

Annotate in three clicks.

No downloads, no accounts, no friction.

1

Drop your PDF

Any PDF, up to 100 MB.

2

Pick a tool

Highlighter, sticky note, freehand pen, shape, callout, strikethrough.

3

Download annotated PDF

Annotations baked in, visible in every reader.

Built for the docs you actually read.

view_column6 highlight colours · sticky notes, freehand pen, shapesdocument_scannerIndividual or bulk · rotate one page or every page in one clicksmartphoneStandard format · visible in Acrobat, Preview, every reader
When the deadline is now

Four files. Four deadlines. One tool.

The moments when it has to be done before you log off.

schedule 11:48 PM · Sunday

"Needed it sorted before the 9am call."

A grad student in Lisbon opens her laptop at midnight with one PDF task standing between her and submission. Done in under a minute, no install, no signup.

school Done in 1 min
schedule 7:42 AM · Tuesday

"Sorted before the standup."

A founder in Berlin gets a Tuesday-morning PDF from a Series-A investor. Coffee in one hand, baby in the other. Handled from the phone in 14 seconds.

draw On mobile
schedule 16:55 · Friday

"The portal closes at 5. It is 4:51."

A consultant in Singapore has nine minutes before the upload portal locks. Drops the PDF in, gets the clean file back, submits with three minutes to spare.

spellcheck Beat the clock
schedule 02:13 AM · Saturday

"Forty files. One afternoon."

An operations lead in Madrid inherits a folder of 40 PDFs to process before a 6 AM flight. Batches them one after another, archives the clean copies, sleeps on the plane.

badge Bulk, fast

Reviews from people who actually annotated the file.

Trustpilot
TrustScore 4.8Based on 5,247 reviews

"The fastest PDF tool I've used."

I work with PDFs every week. This is the only one that just works — no install, no watermark surprise, no 20-minute wait. In and out in under a minute.

/
James W.
Property Manager · London, UK

"Saved me a stack of admin."

I had 30 vendor PDFs to get through before a deadline. Did them all in 10 minutes flat. Used to take half a day with desktop software.

/
Lena S.
Founder · Berlin, Germany

"Layout came out perfect."

I ran a 60-page portfolio through it. Fonts, columns, page numbers — all intact. Opened the result on my iPad and it was pixel-perfect.

/
Wei C.
Software Engineer · Singapore

Questions about annotating PDFs.

Don't see your question? Our team replies within 2 hours.

chat Chat with support
Yes — annotations are saved using the PDF standard format (PDF/A annotations). Visible in Adobe Acrobat, Preview, Chrome, Safari, iPhone Books, Android readers. No special viewer required.
Yes. Open the file in our Edit PDF tool — every annotation is a separate object you can move, resize, recolour or delete.
Yes — share the same file. Each person's annotations are tagged with their name and stay separate. Reply to a sticky note like a comment thread.
Yes by default — highlights, drawings and shapes print as you see them. Sticky notes print as numbered callouts in the margin (configurable).
If you have the password, yes — unlock first with our Unlock PDF tool, then annotate.
Negligibly — text and shapes add only a few KB. Drawings with many strokes can add a bit more.
Yes. Files are encrypted with 256-bit SSL in transit and at rest. Auto-deleted 1 hour after you finish. SOC 2 Type II certified, GDPR compliant.
Certified & auditedSOC 2 Type IIGDPR compliantISO 27001HIPAA-readyeIDAS · ESIGNPCI DSS

Stop printing PDFs to highlight.
Highlight it in 5 seconds.

Research, contracts, study guides — highlighted, sticky-noted and drawn-on in one place.

bolt Start annotating
bolt Ready in 12 secondslock 256-bit SSLdevices Any device
east Annotate a PDF — free