PDF & Image Guides
Practical, step-by-step tutorials for the document and image jobs people actually search for — reducing PDF file size, converting iPhone HEIC photos, and sizing photos for exam forms. Every guide links straight to the free PDF AutoPilot tool that does the job. Prefer to jump in? Browse the PDF tools, the image tools, or every tool.
- PDF 6 min read
How to Reduce PDF File Size (Below 100 KB, Free)
Reduce PDF file size for free — get under 1 MB, 500 KB, or even 100 KB for email and upload limits. Learn what makes a PDF large, how to compress it in your browser, and when to split or merge first.
Read guide - PDF 5 min read
How to Merge PDF Files (Free, Without Losing Quality)
Merge PDF files into one document for free, with no quality loss and no watermark. Learn how to combine multiple PDFs, reorder the pages, keep everything private in your browser, then compress or split the result.
Read guide - Convert 6 min read
How to Convert PDF to Word (and Keep the Formatting)
Convert PDF to an editable Word (.docx) document for free and keep as much formatting as possible. Learn what converts cleanly, why scanned PDFs need OCR first, how to test for a text layer, and how your file is handled.
Read guide - Convert 7 min read
How to Convert a Photo to PDF on iPhone, Android & Online (Free)
Convert a photo to PDF for free — online in any browser, on iPhone, and on Android. Turn one image or a whole batch into a single PDF, set the page size, and shrink it for uploads.
Read guide - Convert 5 min read
How to Convert HEIC to JPG on Windows, Android & Online (Free)
Convert HEIC to JPG for free — online in any browser, on Windows, and on Android. Learn why iPhone HEIC photos won't open, how to batch-convert them, and how to stop your iPhone making HEIC files.
Read guide - Image 8 min read
Passport & ID Photo Size Guide by Country (US 2×2, Schengen 35×45, India)
Passport and ID photo size guide by country: US 2×2 in / 600×600 px, Schengen 35×45 mm, India, UK, and Canada — plus background colour, DPI, and pixel rules. Confirm the official spec.
Read guide - Image 7 min read
How to Resize a Photo to a Specific KB for Exam & Govt Forms (SSC, UPSC, NEET)
Resize a photo and signature to the exact pixels and KB range Indian exam and government portals demand (SSC, UPSC, NEET, banking, railways) — e.g. 200×230 px at 20–50 KB. Free, private, in your browser.
Read guide - PDF 6 min read
How to Password-Protect (and Unlock) a PDF — Free
Add a password to a PDF with AES-256 encryption, or remove a password you already know — free. Learn how PDF encryption works, how your file is processed, and how to pick a password that actually holds up.
Read guide - PDF 6 min read
How to Electronically Sign a PDF for Free
Sign a PDF online for free — draw or type your signature, place it exactly where it belongs, and download the signed file. Learn how e-signatures work, whether they are legally valid, and how signing in your browser keeps the document private.
Read guide - PDF 6 min read
The Best Free iLovePDF & Smallpdf Alternative (No Upload, Private)
Looking for a free iLovePDF or Smallpdf alternative? PDF AutoPilot runs most of its tools right in your browser, so files never leave your device — free, no sign-up, no watermark. An honest comparison, including when a server is used.
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