Edit text & images
Fix a name, a number, a paragraph — directly on the page, with the original font and layout preserved.
Zeltosoft · ZPDF Pro
The PDF editor built like software, not a viewer
Edit, redact, sign, and encrypt — every file tracked, processed entirely in your own workspace.
No uploads to someone else's cloud. Edit text and images, fill and flatten forms, redact for real, sign with a re-issued digital signature after every change — all without your files ever leaving your own encrypted workspace.
Encrypted at rest · Digital signatures · Role-based access
Features
Everything a working PDF studio needs
Not a viewer with a few toys bolted on — a full editing pipeline, built for documents that matter.
OCR for scanned pages
Turn a scanned or image-based PDF into text you can actually select, search, and edit.
Fill & flatten forms
Detect text, checkbox, radio, and dropdown fields, fill them in, and lock the values in on save.
Redaction that's actually permanent
Removes the underlying text, not just a black box on top of it — a redacted page won't turn up in search.
Signatures that survive edits
Place a visible signature stamp, then keep editing — a matching digital signature is re-issued automatically on save.
Watermarking
Stamp every page with a custom watermark, or clear one that's already there.
Password protection
Lock a file with an open password, change it, or remove it — without leaving the editor.
Organize pages
Merge, split, extract, reorder, rotate, or crop — the whole document stays in one working session.
Security
Your files stay yours
Every file is stored as AES-256-GCM ciphertext, per account, decrypted only in memory after you sign in. Signatures are genuine PKCS#7 / CMS objects, re-issued automatically whenever a signed file is edited — not a static stamp.
encryptionAES-256-GCM
signingPKCS#7 / CMS (pyHanko)
accessrole-based, org groups
storageper-file, key in memory only
✓ encrypted at rest
✓ signature re-issued on edit
✓ up to 12 saved versions retained
Pricing
Plans that scale with how much you edit
Limits are counted in files and pages, so one large PDF can't spend a whole month's allowance.
Ready to try it on your own PDFs?
No credit card. Your files stay encrypted to your account from the first upload.