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Powerful utilities. Zero servers. Everything runs in your browser.

50 tools · 100% client-side

Tümü 50 PDF 7 Görsel 6 Tasarım 6 Metin 8 Geliştirici 9 Güvenlik 3 Kripto 1 Ağ 1 Ses 2 Dönüştürücüler 2 Matematik 1 Finans 1 Zaman 1 Üretkenlik 2

PDF

7
PDF Compressor This free PDF compressor reduces PDF file size by re-encoding images with adaptive DPI scaling, working entirely in your browse… PDF PDF Merger & Splitter A free browser-based tool that merges multiple PDFs into one ordered file or splits a single PDF into smaller files by page ran… PDF Image to PDF A free browser-based tool that combines any number of JPG, PNG, WebP, GIF or BMP images into a single PDF, with page size, orie… PDF PDF Watermarker Stamps text or image watermark onto PDF pages, with full styling, locally with pdf-lib. PDF PDF to Word PDF.js extracts text + layout, JSZip builds valid OOXML .docx for Word/Docs/Pages. PDF EPUB to PDF JSZip unzips EPUB, reads OPF spine, pdf-lib builds PDF with cover, TOC, chapter headings. PDF TXT & CSV to PDF Auto-detects text vs CSV/TSV, renders prose with word-wrap or styled table with bold header. PDF

Görsel

6
Image Converter This free image converter changes and compresses HEIC, JPG, PNG, WebP, GIF, BMP, AVIF and ICO files directly in your browser, i… Görsel Color Palette Extractor This free color palette extractor reads any image you drop in, samples its pixels and surfaces the most representative colours… Görsel Favicon Generator This free favicon generator turns any image, emoji or short text into a complete favicon set — multi-size PNGs, a real multi-resolution . Görsel Video to GIF Converter This free video-to-GIF converter decodes any MP4, WebM, MOV or OGG video in your browser, lets you trim the slice you want, dia… Görsel Transparent Signature Maker Browser-based tool that turns drawn or photographed signature into transparent PNG. Görsel EXIF Remover Re-encodes images via canvas to drop EXIF/GPS/camera/timestamp/color-profile. Görsel

Tasarım

6
QR Code Designer This free QR code designer creates customizable, brand-free QR codes with your own colours, gradients and a centre logo, then e… Tasarım Lorem Ipsum Generator This is a free, browser-based Lorem Ipsum generator that produces classic placeholder text in paragraphs, sentences, words or b… Tasarım Fancy Border Radius This free fancy border-radius generator turns the eight-value CSS border-radius syntax into a tactile, eight-handle playground… Tasarım CSS Box Shadow This free CSS box-shadow generator lets you stack any number of shadow layers visually, tune offset, blur, spread, colour and o… Tasarım CSS Gradient This free CSS gradient generator lets you design linear, radial and conic gradients with unlimited colour stops, dial the angle… Tasarım SVG Optimizer This free SVG optimizer strips the editor cruft, metadata, comments, default attribute values and excess whitespace that Illust… Tasarım

Metin

8
Word Counter This free word counter tallies words, characters, sentences and paragraphs in real time and estimates reading and speaking time… Metin Text Diff Text Diff is a free online tool that compares two blocks of text side by side and highlights every addition, deletion and chang… Metin Case Converter This is a free, browser-based case converter that instantly rewrites your text in UPPERCASE, lowercase, Title Case, Sentence ca… Metin Text Cleaner This is a free, browser-based text cleaner that strips extra spaces, blank lines, tabs and invisible Unicode characters from an… Metin Duplicate Line Remover This is a free, browser-based duplicate line remover that strips repeating lines from any text, with options for case-insensiti… Metin Advanced Find & Replace This is a free, browser-based find and replace tool with full regular-expression support, case-insensitive matching, multiline… Metin Email & Phone Extractor A free, browser-based extractor that scans pasted text or any dropped . TEXT Markdown Previewer A free, browser-based live previewer for GitHub Flavored Markdown — with syntax-highlighted code (highlight. TEXT

Geliştirici

9
JSON Editor This is a free, browser-based JSON editor that validates, formats, minifies, sorts and converts JSON to YAML or CSV instantly —… Geliştirici Base64 Encoder / Decoder This is a free, browser-based Base64 tool that encodes and decodes text and files instantly — supporting standard and URL-safe… Geliştirici URL Encoder / Decoder This is a free, browser-based URL encoder and decoder that percent-encodes and decodes text, query values and whole links insta… Geliştirici HTML Entity Encoder / Decoder This is a free, browser-based HTML entity encoder and decoder that converts text to and from HTML entities — escaping special c… Geliştirici Regex Tester This is a free online regex tester that lets you build, test and debug JavaScript regular expressions with real-time match high… Geliştirici Code Formatter This is a free, browser-based code formatter that beautifies and minifies HTML, CSS and JavaScript instantly using Prettier and… Geliştirici XML Formatter This is a free online XML formatter that pretty-prints, minifies and validates XML — and runs XPath queries against it — entire… Geliştirici Cron Parser This is a free online cron expression parser that explains any 5- or 6-field cron schedule in plain English (and 3 more languag… Geliştirici Git Generator This is a free online Git command generator that builds correct, copy-ready Git commands for the most common tasks — clone, bra… Geliştirici

Güvenlik

3
JWT Decoder This free JWT decoder splits a JSON Web Token into its header, payload and signature and decodes the claims in your browser, so… Güvenlik Password Generator This free tool builds cryptographically random passwords and EFF-style diceware passphrases entirely in your browser, showing l… Güvenlik Password Strength Tester This free, browser-only tool measures the real strength of a password by combining character-pool entropy with pattern detectio… Güvenlik

Kripto

1
Hash & UUID This free tool generates SHA-256, SHA-512 and MD5 hashes from text or files and produces bulk RFC 4122 UUIDv4 identifiers, comp… Kripto

Ağ

1
CIDR Calculator This is a free online CIDR / subnet calculator that breaks any IPv4 or IPv6 CIDR block into its network, broadcast and usable h… Ağ

Ses

2
Audio Cutter This free audio cutter decodes any MP3, WAV, OGG or M4A file in your browser with the Web Audio API, draws a real waveform, let… Ses Speech to Text This free tool turns spoken words into editable text live in your browser, using the W3C Web Speech API. Ses

Dönüştürücüler

2
Unit & Data Converter This free tool converts between more than 200 units across 10 categories — length, mass, volume, temperature, speed, area, pres… Dönüştür Epoch Timestamp Converter This free tool converts between Unix timestamps (seconds, milliseconds, microseconds and nanoseconds) and human dates in UTC, l… Dönüştür

Matematik

1
Advanced Percentage Calculator This free tool wraps six percentage workflows — what is X% of Y, X is what % of Y, percentage change, increase/decrease, tip &… Matematik

Finans

1
Card & IBAN Validator This free tool validates credit-card numbers with the Luhn algorithm and brand detection (Visa, Mastercard, Amex, Discover, Din… Finans

Zaman

1
Time Zone Planner This free tool tracks the current time in multiple cities side by side, highlights each city's work hours on a 24-hour timeline… Zaman

Üretkenlik

2
Scratchpad This free tool is a private offline notepad — a sidebar of notes, an editor with autosave to IndexedDB, search across titles an… Verimlilik Bulk File Renamer Pattern-based bulk rename: {n}, {orig}, {date}, {ext} tokens, find/replace, case, ZIP delivery. Verimlilik

No tools match your search.

Why browser-based tools?

Traditional web utilities send your files and data to remote servers for processing. Toolbox takes a fundamentally different approach: every computation happens inside your browser using modern APIs. Your PDFs, images, tokens and text never touch an external server.

The platform supports four languages — English, Turkish, German and Russian — with automatic browser language detection. Switching languages happens instantly without a page reload.

Frequently Asked Questions

No. All processing happens entirely in your browser. Your files are never transmitted to any server.
Most tools work offline after the initial page load. Tools that require CDN libraries need a connection on first use, after which they are cached by the browser.
English, Turkish (Türkçe), German (Deutsch) and Russian (Русский). The language is detected from your browser settings and can be changed instantly using the switcher in the navigation bar.