PDFinator Information Library
Guides about PDF files and editing, plus a full explanation of every symbol collection, category and icon available in the editor.
PDF & editing guides
What is a PDF file?
What a PDF file is, where it came from and why everyone uses it.
How to edit a PDF online
Step-by-step: add text, images, drawings and shapes to any PDF.
Annotating PDFs with industry-standard symbols
Why industry-standard symbols make marked-up documents clearer.
Signing and filling PDF forms
Sign documents electronically and fill PDF forms without printing.
Compressing and converting PDF files
Make PDFs smaller and convert them to images or Word.
Protecting and redacting PDF files
Add passwords, limit printing and permanently hide private details.
Icon library
Architecture & Floorplan
Walls, doors, windows, furniture and plan markings for floor plans.
56 icons
Real Estate & Property Inspection
Damage, hazard and inspection symbols for property reports.
50 icons
Education, Grading & Editing
Grading stamps, feedback marks and standard proofreading symbols.
53 icons
Legal, HR & Administration
Status stamps, signing flags, notary and filing symbols.
47 icons
UI/UX & Product Management
Interface components, flow logic and review symbols for product teams.
50 icons
Security Systems Installation
Cameras, detectors, alarms and access-control symbols for installation plans.
50 icons
Electrical & Mechanical Engineering
Electrical, power, plumbing, HVAC and instrument symbols.
49 icons
Logistics & Inventory
Handling labels, storage, shipping and warehouse symbols.
49 icons
Resume
Contact icons, section headers, skill ratings and badges for CVs.
50 icons
Sheet Music
Staff and tablature pages, notes, rests, time signatures and notation symbols.
124 icons