Most Used Tools
Every tool on the site, ranked most used to least used — based on how people actually use Open Tools Library, refreshed automatically.
Merge PDF
PDF ToolsCombine multiple PDF files into a single document, in any order you choose.
Split PDF
PDF ToolsExtract a page range from a PDF, or split every page into its own file.
Compress PDF
PDF ToolsReduce PDF file size for easier sharing and uploading — all in your browser.
PDF to Word Converter
PDF ToolsExtract the text from a PDF — even scanned ones, via built-in OCR — and download it as an editable .docx Word file, right in your browser.
JPG to PDF Converter
PDF ToolsCombine one or more images into a single PDF, with no stretching, no wrong-way-up photos, and no quality loss — all in your browser.
Image to PDF Converter
PDF ToolsBundle any mix of images — screenshots, graphics, PNGs, WEBP, and more — into a single, well-formed PDF, entirely in your browser.
PDF to Image Converter
PDF ToolsConvert every page of a PDF into a separate image, in the format and resolution you choose, all in your browser.
Online PDF Editor
PDF ToolsAdd text, highlight or whiteout content, draw, insert images, and rotate or delete pages — directly in your browser, then save a new PDF.
Sign PDF
PDF ToolsCreate a signature by drawing it, typing it in a handwriting-style font, or uploading a photo of it, then drag it onto any page and save.
Word Counter
Text & Writing ToolsCount words, characters, sentences, and paragraphs live as you type, plus get a Flesch readability grade and a stopword-filtered keyword density report.
Character Counter
Text & Writing ToolsGet an accurate, emoji-aware character count, byte size, and live countdown against real platform limits — X, meta descriptions, SMS segments, and more.
Case Converter
Text & Writing ToolsConvert text into 14 case formats simultaneously — UPPERCASE, Title Case, camelCase, snake_case, kebab-case, and more — each with its own instant copy button.
Slug Generator
Text & Writing ToolsConvert titles into clean, URL-safe slugs with accent handling, stop-word removal, and length control — plus a batch mode that slugifies an entire list at once and exports it as a CSV.
Lorem Ipsum Generator
Text & Writing ToolsGenerate classic Lorem Ipsum filler text by paragraph, sentence, word, or list — or hit an exact character count for a precise mockup. Plus four alternative themes beyond the classic Latin.