Edit PDF
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Editing a PDF here means adding and annotating content on a page: text boxes, images, shapes, highlights, and drawing. Because a PDF stores text as fixed, positioned glyphs rather than flowing paragraphs, this kind of editing overlays new material on top of the page instead of reflowing the words already in the file.
At a Glance
1 Credit
Per Save
On-Device
Processing
25 MB
Free File Limit
500 MB
Pro File Limit
Key Facts
LittlePDF Edit PDF applies edits entirely client-side in the browser using pdf-lib, so no document content is uploaded to a server.
The tool overlays new content (text, images, shapes, highlights, and freehand drawing) on top of the page; it does not rewrite the PDF's existing embedded text.
Each save costs 1 credit; free accounts get 500 credits per day and a 25 MB file limit, while Pro supports files up to 500 MB.
How to Edit PDF in 3 Steps
Drop the PDF you want to mark up into the upload area, or click to browse.
Use the toolbar to add text, images, shapes, highlights, or freehand drawing where you need them.
Click Save and the edited PDF downloads to your device.
Why Edit PDF with LittlePDF?
Editing runs in your browser with pdf-lib, so the document is marked up without ever being uploaded.
Add text, images, shapes, highlights, and freehand drawing, then place each item exactly where you want it.
Nothing to install or license, so you can annotate a PDF without a desktop suite.
One credit per save against 500 free credits a day keeps routine markup effectively free.
Features
Annotation Toolbar
Highlights, underlines, strikethroughs, sticky notes, rectangles, circles, arrows, and freehand drawing live in one toolbar, so reviewing and marking up a page is a few clicks rather than a menu hunt.
Text and Image Overlay
Drop text boxes anywhere with a chosen font, size, and color, and place or resize images to sit alongside the existing page. New content layers on top of the original without disturbing it.
Stays on Your Device
Every edit is applied locally with pdf-lib. The PDF content is never sent to a remote server, so a sensitive document stays confidential the entire time you work on it.
Frequently Asked Questions
Last updated: June 2026