Overview
Precise PDF coordinate marking — local parsing, privacy-first
PDF Coord Marker helps developers, designers, and document reviewers mark rectangular regions on PDF pages and work with precise coordinates — without uploading your files to any server. Everything runs locally in your browser using PDF.js. Your PDF never leaves your device. WHAT YOU CAN DO • Upload a PDF and open the built-in viewer • Enter Bottom Left / Top Right coordinates (PDF point units, bottom-left origin) • Drag on the PDF to select a region — coordinates fill in automatically • Paste coordinates from JSON or other tool output • Add visual box markers, navigate pages, and zoom • Export annotated PNG or PDF • Switch UI language: English or 中文 WHO IT'S FOR • Developers integrating PDF extraction or layout tools • QA teams verifying document regions • Anyone who needs repeatable, shareable coordinate data from PDFs FREE vs PRO Free (always available): • Unlimited PDF marking and viewing • Core coordinate tools and exports • Exports include a small corner watermark Pro — one-time lifetime license ($9.90 via Gumroad, no subscription): • Watermark-free exports • Batch import (multiple regions at once) • Fine-tune offsets • Custom box styles (color, stroke, fill) • Copy coordinates to clipboard • HD export quality • No ads Purchase Pro on Gumroad, then activate with your purchase email and license key in the extension popup or Settings page. PRIVACY FIRST • PDF parsing and marking happen entirely on your device • No PDF content is sent to our servers • License verification contacts Gumroad’s API only when you activate Pro • Settings and license status are stored locally in Chrome (chrome.storage.local) • Temporary PDF data uses IndexedDB and is cleared when you start a new session PERMISSIONS (why we need them) • storage — save preferences and Pro license status • downloads — save exported PNG/PDF files • tabs — open Gumroad checkout in a new tab when you choose to upgrade Free users may see an optional sponsored Amazon affiliate banner. Pro removes all ads. SUPPORT Questions or license issues: art.lanphoon@gmail.com
Details
- Version1.1.0
- UpdatedJuly 6, 2026
- FeaturesOffers in-app purchases
- Offered bynacom
- Size950KiB
- Languages2 languages
- DeveloperSIBO FAN
shanghaishi songjiangqu sijingzheng waipojinglu 288long 13haolou 松江区, 上海市 200000 CNEmail
art.lanphoon@gmail.comPhone
+86 138 1893 9610 - TraderThis developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.
Privacy
PDF Coord Marker has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
PDF Coord Marker handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
