Practical, specific guides on merging, splitting, compressing, and converting documents — plus how to prepare files for government forms and e-commerce marketplaces — without uploading anything to a server.
Step-by-step guide to combining documents on your device without internet access.
Read ArticleExtract specific pages or divide one large PDF into several smaller files in seconds.
Read ArticleHow to shrink large reports to fit Gmail limits (25MB) easily without losing quality.
Read ArticleThe file format explained simply — what's inside a PDF, and why it became the universal document standard.
Read ArticleUnderstanding the privacy difference between server uploads and local, in-browser tools.
Read ArticleHow WebAssembly lets a full PDF toolkit run entirely on your device, with nothing ever sent to a server.
Read ArticleApplying for a loan? Combine monthly statements without uploading your financial data online.
Read GuideHow the in-browser PDF-to-Word conversion works, and why your document never leaves your device.
Read GuideExact pixel dimensions and file sizes for SSC, IBPS, Railway RRB, and UPSC application portals.
Read GuideReduce PDF size below 100KB for government portals (UPSC, SSC) securely, entirely offline.
Read GuidePhone-by-phone tips for combining PDFs on Android Chrome without burning mobile data.
Read GuideTurn a photo of a document or handwritten note into editable text using on-device OCR.
Read GuideWhy most "free" OCR tools cap you at a few pages a day, and how this one doesn't.
Read GuideThe complete seller handbook for 4x6 thermal label cropping, invoice separation, and SKU sorting across all three marketplaces.
Read GuideNo guides in this category yet.
Every guide here starts from a specific, real problem rather than a general overview of what a PDF tool can do. "How do I get my scanned certificate under 200KB for an SSC application" is a different question from "how does PDF compression work," and it deserves a different kind of answer — one with the actual numbers, the actual portal quirks, and the actual steps, not just a definition. That's the standard every guide on this page is written to.
A few threads run through all of them. First, privacy: every tool these guides point to runs entirely in your browser using WebAssembly, so nothing you upload — a bank statement, an Aadhaar card, a signed contract — ever reaches a server. Second, specificity: rather than one generic "how to use a PDF compressor" page, there's a dedicated guide for compressing to exactly 100KB for a government portal, a separate one for shrinking a report to fit Gmail's 25MB attachment limit, and another for resizing a passport photo to the exact pixel dimensions IBPS expects — because the right answer genuinely differs between those three cases.
The guides are grouped into four categories using the filter tabs above: general Tutorials on the core PDF operations (merging, splitting, converting, understanding the format itself), Security & Privacy deep-dives on why and how client-side processing works, Government Forms guides built specifically around Indian exam and banking portal requirements, and E-Commerce guides for marketplace sellers handling shipping labels at scale. New guides are added as new tools ship, usually covering whatever specific problem prompted the tool in the first place.
Yes. Every guide on this page is free, with no account, signup, or paywall of any kind — the same as every tool linked from them.
No. None of the tools on The PDF Mechanic require an account, email address, or payment. Open the tool, use it, and download your result.
New guides are added alongside new tools, typically every few weeks, usually covering a specific real-world problem — like government form photo sizing or offline Android usage — rather than a generic overview.
Most of the underlying PDF and image techniques (merging, splitting, compressing, converting) apply anywhere. A few guides — like government job form sizing and e-commerce marketplace label cropping — are written specifically around Indian portals and marketplaces (SSC, UPSC, IBPS, Railway RRB, Meesho, Flipkart, Amazon Easy Ship) since those have their own specific requirements.