How-to guides for free online tools
Short, practical walkthroughs for the tasks people search for most. Every guide links straight to a free tool that runs in your browser.
How to Compress a PDF Online for Free (No Sign-Up)
Compress one PDF up to 100 MiB in your browser. Learn which lossy preset to choose, what stays unchanged, and why file-size savings vary.
Uses: PDF Compressor
How to Merge PDF Files into One Document Online
Combine multiple PDFs into a single file for free — reorder pages, then download. Runs 100% in your browser.
Uses: PDF Merger
How to Split a PDF File into Separate Pages Online
Extract single pages or ranges from a PDF for free, right in your browser. Preview thumbnails, pick pages, download.
Uses: PDF Splitter
How to Edit and Annotate a PDF Online for Free
Add text, draw, highlight and box a PDF right in your browser — then download it. No upload, no sign-up, entirely private.
Uses: PDF Editor
How to Convert Images to PDF Online (JPG, PNG, WebP)
Turn one or more photos or scans into a single PDF for free — choose page size, orientation and fit, all in your browser.
Uses: Image to PDF
How to Convert a PDF to Images Online for Free
Render PDF pages as high-quality JPG or PNG images right in your browser. Pick the scale, choose the format, download.
Uses: PDF to Image
How to Convert a PDF to PowerPoint (PPT/PPTX) Online
Turn every PDF page into its own 16:9 PowerPoint slide as a snapshot image. Pick a page range and image quality, preview, download.
Uses: PDF to PowerPoint
How to Rotate a PDF: Turn a Sideways PDF the Right Way Online
Rotate every page of a PDF 90° clockwise, 90° counter-clockwise, or 180° in one click. Lossless, fully in your browser, no uploads.
Uses: PDF Rotator
How to Convert HTML to PDF Online for Free
Turn pasted HTML into a paginated A4 PDF with real, selectable text — what the converter keeps, what it drops, and how to write markup that converts cleanly.
Uses: HTML to PDF
How to Convert a PDF to a Word Document Online for Free
Turn PDF pages into an editable .docx in your browser — no uploads, no sign-up. Private and free for any file size.
Uses: PDF to Word
How to Password Protect a PDF Online for Free
Lock any PDF with a password so only people you choose can open it. Runs entirely in your browser — nothing is ever uploaded.
Uses: Protect PDF
How to Unlock a Password-Protected PDF Online for Free
Remove a password you know from a PDF in seconds — right in your browser. The unlocked copy is created locally, so it's private by design.
Uses: Unlock PDF
How to View a PDF's Metadata Online for Free
Inspect what a PDF actually records — title, author, creator, producer and creation/modification dates. Runs entirely in your browser; nothing is uploaded.
Uses: PDF Metadata Viewer
How to Redact a PDF Online for Free (Permanently Cover Text)
Black-out names, numbers and sensitive lines in a PDF so they can't be seen or copied — boxes are stamped into the page, not removable overlays. Runs 100% in your browser.
Uses: Redact PDF
How to Remove Pages from a PDF Online for Free
Delete unwanted, blank or duplicate pages from any PDF — quickly, in your browser, with live page previews.
Uses: PDF Delete Pages
How to Remove Blank Pages from a PDF
Find and delete near-empty pages in a PDF — a heuristic ink-coverage scan flags blanks, you review the selection, and one click rebuilds a cleaner file. Fully in your browser.
Uses: Remove Blank Pages
How to Add a Text Watermark to a PDF
Stamp CONFIDENTIAL, DRAFT or copyright text on every page of a PDF — centered, at whatever size, opacity and angle you choose, entirely in your browser.
Uses: PDF Watermark
How to Add Page Numbers to a PDF
Add a page number to every page of a PDF in one of six corner positions — with an “n / total” count, a starting offset, and placement that follows rotated pages, entirely in your browser.
Uses: Add Page Numbers to PDF
How to Crop a PDF Online (and What Cropping Actually Does)
Trim unwanted margins from a PDF by percentage in your browser — a live page-1 preview, rotated pages handled automatically, and an honest look at why cropping keeps your file size roughly the same.
Uses: PDF Cropper
How to Convert CSV to JSON Online (Without Losing a Column)
Convert CSV to JSON in your browser with a real RFC 4180 parser: quoted commas, embedded newlines, doubled quotes, CRLF, CR and LF, a UTF-8 BOM, honest delimiter detection, and every decision the converter made listed on screen.
Uses: CSV to JSON Converter
How to Generate a Strong Password Online
Create secure, random passwords in your browser — fully offline, no logging, no uploads. Tunable length, character sets and similar-letter exclusion.
Uses: Password Generator
How to Create a QR Code for Free (URL, Text, Email)
Generate a clean, scannable QR code for any link or text, right in your browser — download as PNG or SVG, no sign-up, no tracking.
Uses: QR Code Generator
How to Compress an Image Online for Free (JPG, PNG, WebP)
Compress one image up to 50 MB in your browser with presets, optional format and resize. Learn what stays unchanged and why the output is never larger.
Uses: Image Compressor
How to Resize an Image Online for Free (JPG, PNG, WebP)
Resize one image to any pixel dimensions in your browser — pick a common preset, lock or unlock the aspect ratio, choose JPG, PNG, or WebP output, and download. Nothing is uploaded.
Uses: Image Resizer
How to Format JSON Online (Pretty Print and Validate)
Pretty-print or minify JSON right in your browser with 2 or 4 space indentation, get a live validity check, and pinpoint parse errors by line and column. Nothing is uploaded.
Uses: JSON Formatter
How to Encode a URL or URL Component Online
Turn any URL or query value into safe %hex form — or decode it back — right in your browser. Learn when to encode only the component and when to keep a whole URL intact.
Uses: URL Encoder & Decoder
How to Encode and Decode Base64 Online
Turn any text into Base64 and back — right in your browser. Learn when URL-safe Base64 (base64url) is required, how = padding works, and why decoded binary data isn't always readable as text.
Uses: Base64 Encoder & Decoder
How to Use a Free Online Notepad (Auto-Save, Private Notes)
Write notes that auto-save in your browser — no sign-up, nothing uploaded. Learn the storage limits, how to export as .txt, and what happens if you clear your browser data.
Uses: Notepad
How to Convert Text to PDF (Free, No Uploads)
Turn plain text into a word-wrapped A4 PDF in your browser. Learn what's preserved, how pagination works, and what this tool doesn't do.
Uses: Text to PDF
How to Convert a PDF Table to Excel (XLSX or CSV)
Turn a text-based PDF's tables into a spreadsheet. Learn which PDFs convert cleanly, how the column detection works, and when to run OCR first.
Uses: PDF to Excel
How to Convert a PDF to Markdown (.md)
Extract a PDF's text layer into Markdown for docs, wikis, READMEs and LLM prompts. Learn what the tool preserves, when to run OCR first, and how to avoid scrambled layouts.
Uses: PDF to Markdown
How to OCR a PDF (Turn Scans into Text)
Recognize printed text in scanned PDFs with browser-based Tesseract OCR in 12 languages. Learn what OCR can and can't do, and when PDF to Text is the better tool.
Uses: OCR PDF
How to Compare Two PDF Files for Changes
Find out what changed between versions of a PDF by comparing their text layers page by page, in your browser. Learn what a text diff catches, what it misses, and how to read the results.
Uses: PDF Compare
How to Auto-Redact a Name or Number Everywhere in a PDF Online
Find every occurrence of a name, account number, email or phrase across a PDF and cover each match with a black box — case-insensitive by default, with a preview and confirm step before anything is drawn.
Uses: Auto-Redact PDF
How to Flatten a PDF Online (What You Lose, and the File Size)
Flatten a PDF by turning every page into one image — the text stops being selectable, searchable or editable, and the file usually gets bigger. Picks the right DPI first.
Uses: Flatten PDF
How to Remove Annotations, Comments and Form Fields from a PDF
Strip the markup layer off a PDF in your browser — comments, highlights, stamps, links and form fields — with the honest catch about filled form values.
Uses: Remove Annotations
How to OCR an Image (and What It Gets Wrong)
Read the printed text out of a photo, screenshot or scan in your browser. Learn what OCR actually does, why a big phone photo loses characters, and what to fix before you trust a result.
Uses: Image OCR & Text Extraction
How to Scale PDF Page Size Without Cropping or Blurry Text
Scale every page of a PDF by one percentage in your browser. Learn what a page scale really changes — page boxes, content and annotations — and what it does not do.
Uses: Scale Pages
How to Overlay One PDF on Another (Stamp, Letterhead, Watermark)
Stamp a PDF onto another in your browser — every page or a range, with position presets, PDF-point offsets and opacity. Learn what an overlay really does, and what it does not do.
Uses: PDF Overlay
How to Edit an Image Online (and What Changes Your Pixels)
Crop, rotate, mirror, resize, adjust, filter and annotate an image in your browser. Learn which edits are exact, what a resize really does to detail, and what your file loses on the way out.
Uses: Image Editor
How to Convert Markdown to HTML Online (Sanitized, Copy-Ready)
Convert Markdown to HTML in your browser: CommonMark and GFM output, an allowlist sanitizer that runs before you copy, a preview of the exact same HTML, and a standalone .html download.
Uses: Markdown to HTML
How to Convert HTML to an Image (PNG, JPEG, WebP) in Your Browser
Render HTML to a PNG, JPEG or WebP at an exact 1x-4x device-pixel scale: a measured capture-box preview, a disclosed pixel budget, a 200 KB cap, and an honest account of what a canvas 2D re-draw does not reproduce.
Uses: HTML to Image
How to Decode a JWT (and Why Decoding Is Not Verifying)
Split a JSON Web Token into header, payload and signature in your browser, read exp, nbf and iat as real dates, and see exactly where the line between decoding and verifying sits.
Uses: JWT Decoder
How to Turn JSON into TypeScript Types Without Guessing
Generate TypeScript interfaces from one JSON sample: how array elements are merged, why a null field stays required, when a key becomes optional, and what the page refuses to invent.
Uses: JSON to TypeScript
How to Format SQL Online Without Uploading Your Query
Pretty-print SQL across 21 dialects in your browser, and learn why an unterminated comment or a mismatched bracket is refused instead of reformatted.
Uses: SQL Formatter
How to Format XML Online and Check It Is Well-Formed
Beautify or minify XML in your browser with a real well-formedness check. Learn why your text and pre blocks come back byte for byte.
Uses: XML Formatter & Well-Formness Check
How to Convert PX to REM (and Back) Without Guessing
Convert pixels to rem and rem to pixels in your browser for any root font-size. See the math, pick the right base, and read the reference table.
Uses: PX ↔ REM Converter
HTTP Status Codes Explained: What 4xx and 5xx Really Mean
A plain tour of the standard HTTP status code classes, with a searchable IANA reference you can filter by class from 1xx to 5xx.
Uses: HTTP Status Codes