Sejda PDF

PDF editor

Write on a PDF: text, shapes, images, links and highlights.

Drag & drop your files here

Supported: PDF

Files are handled privately and removed automatically. Interface preview - processing is not enabled yet.

About PDF editor

A full editing surface in the browser. Correct a typo in existing text, drop in a logo, highlight a paragraph, draw an arrow or add a hyperlink - then export a clean, flattened PDF.

  • Edit existing text lines
  • Insert images and signatures
  • Annotate with highlights and shapes

How to pdf editor

  1. 1

    Open your document

    The page appears exactly as it will print.

  2. 2

    Edit anything

    Text, images, shapes, highlights, links and whiteout.

  3. 3

    Export

    Download an edited PDF that opens anywhere.

A practical guide to pdf editor

What in-browser PDF editing can and cannot do

This editor treats a PDF as a fixed page you draw on top of, which is very different from editing a live document. You can fix a typo, white out a wrong figure, add a logo, drop in a hyperlink, highlight a clause or sketch an arrow, all without installing anything. What it does not do is reflow paragraphs the way a word processor would, because the layout is frozen. Knowing that boundary saves frustration: reach for the editor for targeted, surface-level changes, and reach for a PDF to Word round-trip when you need to rewrite whole sections.

Making corrections that blend in

The cleanest edits match what is already on the page. When you retype a line, keep the same font size and stay close to the original wording so the substituted characters do not stand out. To remove something, whiteout is usually tidier than trying to delete embedded content, and it leaves you free to type or place an image over the covered area. Add hyperlinks as their own objects so they stay clickable, and zoom in before exporting to catch a highlight that overshoots a word or a shape nudged slightly out of line.

Deciding when to flatten before you send

Everything you add stays editable, which is convenient while you work but risky when you share, since a recipient could move or clear your annotations. Flattening bakes them permanently into the page so the file looks identical in every reader and cannot be tampered with. The trade-off is that flattening is one-way, so keep the editable version for yourself and send the flattened copy. If the document is a form people still need to complete, leave the fields live and flatten only after it comes back filled.

Frequently asked questions

The text I edited jumped to a different font. Why?
Editing reuses the font already embedded on that line, so replacements blend in. When the original font is not embedded, or you type a character it lacks, the closest available face is substituted, which can look slightly different. Keeping edits short and matching the existing size usually hides the change.
Can I move or resize an image that is already in the PDF?
You can place, scale and reposition images you add yourself. Graphics baked into the original page are part of its content rather than separate objects, so to swap one, cover it with the whiteout tool and drop your new image on top.
Will my edits reflow the rest of the paragraph?
No. A PDF is a fixed layout, not a word processor, so editing a line does not push the following text down or rewrap it. For heavy rewriting where reflow matters, convert to Word, edit there, then export back to PDF.
Do highlights and notes stay searchable and selectable?
Highlights sit over the real text, so the underlying words remain selectable and searchable. Text boxes you add become part of the page's text too. Only once you flatten the file do annotations merge into the page and stop being separate objects.

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