Cada ficheiro que toca aqui fica na sua máquina.
Ferramentas PDF, de imagem, para programadores, SEO, de texto, para estudantes e negócios — todas grátis, todas inteiramente no navegador. Sem envio, sem conta, nenhum servidor vê os seus dados.
Popular tools
The highest-demand tools with full options — browse by category below for the rest.
Una, divida, comprima, converta e edite PDFs inteiramente no navegador — os seus ficheiros nunca saem do dispositivo.
PDF Tools hub guide
PDF Tools on TechDriven Tools is the hub for people who need to merge, split, compress, convert, sign, watermark, OCR, and organize PDFs privately in the browser. Every tool linked from this category is built to run in your browser: your files and inputs are processed on-device, then returned as a download or copyable result. That architecture is the product — not a marketing claim bolted onto an upload form.
Searchers land here with a job already in mind. Someone comparing lenders wants EMI math without pasting salary figures into a stranger’s server. A designer wants WebP output without dropping brand assets into a free converter. A developer wants JSON formatted without pasting production payloads into a random pastebin. This hub exists to route those intents to the right tool quickly, then explain the trade-offs honestly so the result is trustworthy.
The audience for PDF Tools is students, freelancers, HR teams, and anyone handling contracts or scanned packets. Their common constraint is the same: the input is sensitive enough that “free upload” is a bad deal, or the task is small enough that installing desktop software is overkill. Browser-local tools win on both axes when the job truly fits client-side libraries (pdf-lib, pdf.js, Canvas, Web Crypto, and plain JavaScript).
What you can do in this category
Open any popular tool below to start immediately — no account wall. Use the full grid on this page to browse everything mapped to PDF Tools. If a sibling category fits the next step better, jump via Related categories rather than forcing one tool to do two jobs.
How browser-local processing works
When you open a tool, the page loads the JavaScript needed for that job. File tools read bytes into memory with the File API; text tools bind to input fields; calculators evaluate formulas instantly. Results are generated as Blobs or strings and handed back through a download link or clipboard action. Laravel serves the HTML; it does not receive your document contents. Optional Supabase sign-in only stores which tool you ran and when — never the file.
That design has limits worth stating on a category page, not burying in a FAQ. Very large files can exhaust tab memory. Some formats (Office conversion, universal HEIC support, certified e-sign) need server engines we deliberately do not pretend to ship. Compressing a PDF by re-encoding pages to images shrinks size but removes selectable text. Honesty here reduces bounce and builds the topical trust Google looks for on authority hubs.
When to use PDF Tools vs other hubs
Stay in PDF Tools when the primary noun of your task matches this category. Switch when the next verb changes: after compressing images you may merge them into a PDF; after calculating EMI you may generate an invoice PDF; after formatting JSON you may hash a canonical string. Related categories below exist for those handoffs.
Quality bar for indexed pages
TechDriven Tools maintains a large catalog for coverage, but only pages with unique depth are submitted for indexing. That protects users who still need a long-tail tool while protecting search quality and AdSense eligibility. Category hubs like this one are always part of the indexable surface because they explain the cluster, link internally, and answer category-level questions.
If you are building topical authority content around PDF Tools, link to specific tool URLs and to the how-to guides on the blog that name real options from this site — not generic keyword essays. That is how hubs compound rankings without thin duplication.
Practical workflows
Pick a primary tool, finish the job, then chain only when the output type changes. Example patterns: unlock → merge → page numbers; compress image → WebP → attach to web CMS; JSON format → JWT inspect → hash for cache key. Keep originals until stakeholders accept the new file. Rename downloads with date and purpose immediately.
On mobile, prefer moderate file sizes and simpler option sets. Local processing is private, but phones have less memory than desktops. If a tab struggles, split the work: fewer pages per run, lower scale, or process on desktop for huge scans.
Privacy expectations
Nothing in PDF Tools requires an account for core functionality. Signing in is optional history. After you download an output, you still control a file on disk — store it where policy allows and clear temporary Downloads copies when finished. Treat developer paste fields like a shared desk: avoid screensharing secrets, and clear buffers when done.
PDF Tools FAQ
Is anything uploaded?
No. PDF tools here use pdf-lib and pdf.js in your browser.
Can I merge on mobile?
Yes — the same tools work in a modern mobile browser.
Does compress keep selectable text?
No — compress flattens pages to images to reduce size.
Are signed PDFs legally binding everywhere?
Technical placement is local; legal acceptance depends on your jurisdiction and counterparty.
Next step
Scroll to the tools grid on this page, open the tool that matches your job, or start from a popular link above. For written walkthroughs, visit the blog and filter by this topic cluster. Return to TechDriven Tools home anytime to search the full catalog with ⌘K / Ctrl+K.
Common mistakes in PDF Tools
People often pick the wrong sibling tool, misread units, or expect one click to replace a desktop suite. Read option labels once, change one control at a time, and verify output on the device where you will share it. For finance and health math in adjacent hubs, remember estimates are not professional advice. Another frequent miss: deleting originals before opening the download — always keep a backup until stakeholders accept the new file.
On PDF Tools specifically, match the tool name to the verb you need. If you need a different verb, leave this hub rather than stretching a tool past what it owns. That habit alone prevents most confusing outputs.
How this hub compares to upload sites
Upload-first sites can be fine for public marketing images. They are a poor fit for contracts, IDs, payroll, API tokens, and unpublished drafts. PDF Tools on TechDriven Tools optimizes for the private case: same job, no transit. The trade-off is feature honesty — we skip tools that cannot run well client-side. When a competitor promises Office conversion or AI background removal for free, ask where the file goes and what is retained. Our answer is simpler: if it cannot run locally with integrity, it is not listed here as a first-class tool.
Why indexing strategy matters here
A hub with clear copy, FAQs, and internal links helps Google understand the cluster. Flooding the index with near-duplicate long-tail pages does the opposite. That is why this category page is deep, while some individual tools remain reachable but noindex until they earn unique content and UI depth. For publishers and SEOs studying this site: topical authority comes from useful hubs and flagship tools, not from raw URL count.
Accessibility and sharing
After visual PDF/image tools, skim contrast and coverage with fresh eyes. After calculators, copy numbers into the system of record your team actually uses. Prefer descriptive filenames over generic downloads so collaborators do not open yesterday’s draft. Keyboard users can open the command palette with ⌘K or Ctrl+K from most pages to jump tools without hunting cards.
How this category stays accurate
When a tool’s options change, its page and FAQ are updated to match real behavior — see the Editorial Policy. Report mismatches via Contact Us. Accuracy beats keyword volume for durable rankings in PDF Tools. We would rather document a limit (HEIC, Office conversion, certified e-sign) than ship a half-broken flow that surprises you mid-job.
Example jobs people finish here
Real PDF Tools sessions are short: open the hub, pick one tool, set two options, download, done. The content on this page exists so search engines and humans understand the cluster before that click. If you arrived from a blog guide, use the popular links to jump straight into the working UI rather than re-reading theory.
Teams standardize defaults (“Medium compress”, “Page X of Y bottom-center”, “annual rate not monthly”) so multi-person workflows stay consistent. Write those recipes down; they transfer better than screenshots alone.
PDF Tools field note 1: keep workflows short, verify outputs before sharing, prefer this hub when privacy or speed matters more than desktop-suite breadth, and chain related categories only when the next verb truly differs.
PDF Tools field note 2: keep workflows short, verify outputs before sharing, prefer this hub when privacy or speed matters more than desktop-suite breadth, and chain related categories only when the next verb truly differs.
PDF Tools field note 3: keep workflows short, verify outputs before sharing, prefer this hub when privacy or speed matters more than desktop-suite breadth, and chain related categories only when the next verb truly differs.
PDF Tools field note 4: keep workflows short, verify outputs before sharing, prefer this hub when privacy or speed matters more than desktop-suite breadth, and chain related categories only when the next verb truly differs.
PDF Tools field note 5: keep workflows short, verify outputs before sharing, prefer this hub when privacy or speed matters more than desktop-suite breadth, and chain related categories only when the next verb truly differs.
How this actually works
Each tool runs entirely with JavaScript already loaded in this page — PDF tools via pdf-lib and pdf.js, image tools via the browser's native Canvas API, and everything else with plain JavaScript. Your files or input are read into browser memory, processed, and handed back as a download or copyable result. This page itself is served by a small Laravel route; Laravel never sees your files either. The only backend in use is Supabase, and only for two optional things: signing in with a magic link, and — only if you're signed in — a log of which tool you ran and when. Honest limits worth knowing: Compress PDF flattens each page to a re-encoded image (great for scans, not ideal if you need selectable text after); HEIC conversion depends on your browser (Safari usually works; Chrome often cannot decode HEIC without a library we don't ship); Fill PDF Form is best-effort for simple AcroForm fields, not a full Adobe Forms replacement; and Word/Excel/PowerPoint ⇄ PDF genuinely needs a server-side engine, so it isn't included — this build only ships tools that can honestly run client-side.
Questions people actually ask
Is this really free, and is there a file size limit?
Yes — no account, no paywall. Since processing happens in your browser's memory rather than uploading anywhere, the practical limit is your device's available RAM, not a server quota. Very large files (500+ pages) may run slower, especially for Compress and PDF→JPG.
Does anything about my file get sent anywhere?
No. Every tool runs with pdf-lib/pdf.js loaded in this page; your file is read into browser memory and never leaves it. The only network call this app makes for your account is Supabase auth — and that only stores which tool you ran and when, never file content.
Why isn't Word/Excel/PowerPoint → PDF included?
Converting Office formats accurately needs a real rendering engine (what Word or LibreOffice use internally) — no browser library does this reliably. Rather than ship a broken version, it's left out.
Does TechDriven Tools have OCR (text recognition)?
Yes — OCR PDF recognizes text in scanned or photographed pages using Tesseract.js, running entirely on your device, and gives you a searchable PDF or a plain text file. Nothing is uploaded for this either.
Can I use this without an internet connection?
Once the page and its libraries have loaded once, yes — the tools themselves need no network access. Signing in and viewing history do require a connection, since those talk to Supabase.
What happens to the "history" if I sign in?
Only a row per tool run — the tool's name and a timestamp. No filename, no file content, ever. You can see the full list any time via the History button.
Are the non-PDF utilities (password generator, JSON formatter, etc.) private too?
Yes — same rule as the PDF tools. Word Counter, Case Converter, Password Generator, UUID Generator, Base64, Hash Generator, JSON Formatter and JWT Decoder all run with plain JavaScript already loaded in this page; nothing you type or paste is sent anywhere.