Is my PDF uploaded when I edit it?

No. The entire editor — rendering, signing, form filling, annotation and export — runs locally in your browser using PDF.js and pdf-lib. Your document never leaves your device, which makes it safe for contracts, medical records and other confidential files.

Click the signature tool, then draw your signature with a mouse, finger or stylus, type it in a script font, or upload a photo of your signature (the white background is removed automatically). Click anywhere on the page to place it, then drag or resize it. Signatures can be saved on your device for one-click reuse.

Can I fill out PDF forms?

Yes. Interactive form fields (text boxes, checkboxes, radio buttons and dropdowns) are detected automatically and become editable in place. Turn on 'Flatten forms' before downloading to bake your answers into the page so they can no longer be changed.

Does the editor add a watermark or limit file size?

No watermarks, no page limits, no sign-up. Because processing is local there is no server-imposed file-size cap either — very large PDFs are only limited by your device's memory.

Can I rearrange, rotate or delete pages?

Yes. The page sidebar shows every page as a thumbnail — drag to reorder, and use the buttons on each thumbnail to rotate it, delete it, or insert a blank page after it. Every action supports undo/redo (Ctrl+Z / Ctrl+Shift+Z).

Can I edit the text that is already in the PDF?

Yes — the Edit text tool lets you click a line of existing text to touch it up: the original is covered with a background-matched box and an editable copy is placed on top, pre-filled with the original words and matched to the original font family, size, weight, style and colour. It's ideal for fixing typos, dates or names. It doesn't reflow whole paragraphs (embedded subset fonts rarely contain every glyph needed), and because the tool covers rather than deletes, use Redact when text must be truly removed.

Can I measure distances and areas on a PDF?

Yes. The Distance tool measures a straight length by dragging, and the Area tool measures an irregular polygon (click each corner, double-click to close) reporting both area and perimeter. Set a real-world scale from a preset, an exact ratio, or by calibrating against a line of known length — perfect for drawings, blueprints and floor plans. A Comments panel lists every markup with jump-to and delete.

Can I make a scanned PDF searchable (OCR)?

Yes. Turn on 'Make searchable (OCR)' in the download dialog and the editor runs on-device OCR over every page that has no text layer, adding an invisible, positioned text layer so the document becomes searchable and its text selectable. Pages that already contain text are left untouched, so nothing is degraded. Everything runs locally — no uploads.

Can I make the PDF more accessible?

Yes. The Accessibility option tags the exported file with a document title and language (catalog /Lang and DisplayDocTitle) so screen readers announce it correctly and readers show the title instead of the filename.

Can I print several pages per sheet, make a booklet, or resize pages?

Yes. Page layout offers N-up (2, 4, 6, 9… pages per sheet in a grid), saddle-stitch booklet imposition, scale/resize every page to A4 or Letter in any orientation, and split wide spreads down the middle into single pages — downloaded as a new PDF.

Can I process several PDFs at once?

Yes. Batch process lets you drop in many PDFs and apply the same operations — watermark, sanitize, compress and password — to all of them at once, downloading the results as a ZIP. Like everything else, it runs entirely in your browser.

Is the redaction real, or just a black box on top?

Real. Many tools draw a rectangle over the text while the words remain selectable underneath. GoChronos re-renders each redacted page with the boxes burned into the pixels and deletes the original page content, fonts and annotations from the file, so the redacted data cannot be recovered by copy-paste or text extraction. An optional OCR pass makes the remaining visible text searchable again.

Can I automatically find and redact emails, SSNs or card numbers?

Yes. Search & Redact scans the whole document for exact text, a regular expression, or built-in patterns (email addresses, phone numbers, Social Security numbers, Luhn-validated credit card numbers), shows every match for review, and redacts the ones you keep. Scanned pages can be included via on-device OCR.

What does the sanitizer remove?

Four independent toggles: document metadata (author, title, dates, XMP), JavaScript (document, page and form-field scripts), embedded file attachments, and external links/actions. Removed objects are genuinely deleted from the file, not just unlinked.

Does it support Bates numbering?

Yes. Add sequential Bates numbers (custom prefix, start number and zero-padding) in any corner, plus free-text headers and footers with {page}, {pages}, {date} and {filename} placeholders — with an option to start stamping after a cover page.

Can I add a certificate-based digital signature?

Yes. Upload your PKCS#12 (.p12/.pfx) certificate, and the document is signed with a real cryptographic PKCS#7 signature (SHA-256/384/512) that covers the whole file — Acrobat and other readers can validate it. The signature can be invisible or a visible block. Everything happens on your device; the private key is never uploaded. RSA signing certificates are supported.

Can it verify a signed PDF?

Yes. When you open a digitally signed PDF, the editor checks the cryptographic signature, confirms the document content matches what was signed (tamper detection), reports whether the signature covers the whole file, and shows the signer's certificate details — all locally.

Can I create fillable form fields?

Yes. Add text fields, checkboxes, dropdowns and signature fields by drawing them on the page, then set each field's name, whether it's required, and options — they become real interactive AcroForm fields in the exported PDF.

Can I password-protect or encrypt the PDF?

Yes. In the download dialog you can encrypt the file (AES-256) with a password required to open it, plus an optional owner password and permission controls for printing, copying and editing. Opening a protected file and exporting without encryption removes the password.

Can I compress or shrink the PDF?

Yes. Turn on Compress in the download dialog to recompress embedded JPEG images at a quality and maximum resolution you choose — vector text and other content are left untouched.

Can I add clickable links?

Yes. The hyperlink tool lets you draw a clickable region that opens a web URL or jumps to another page in the document.

Can I combine PDFs or add pages from another file?

Yes. Use 'Insert PDF' in the page panel to append another PDF's pages into the document, then reorder, rotate or delete them like any other page before exporting.

PDF Editor — Edit Text, Sign, Redact, OCR & Measure Free

Edit any PDF in your browser: edit existing text in place, sign (incl. certificate signatures), fill and create forms, truly redact, measure distance & area, OCR scans into searchable text, add accessibility tags, watermark, crop, N-up/booklet layouts, batch-process many files, password-protect, compress and combine. No uploads, no watermarks.