Rasterize each page and export as PNG, ZIP bundled, adjustable DPI scale.

Combine PNG/JPEG into a PDF, one image per page.

Concatenate multiple files in order.

Export page by page or group by a fixed page count.

Apply 90°/180°/270° rotation to selected pages.

Check pages to delete; remaining pages keep original order.

Remove black edges or whitespace, with page selection and pt margins.

Enter the known open password and export a new unprotected file.

Rasterize and rebuild as JPG-PDF for significantly smaller size (lossy).

Export as txt; works for text-based PDFs. Scanned docs may have no text.

Diagonal semi-transparent watermark, ideal for internal drafts.

Overlay PNG/JPG on every page with position and scale controls.

Batch page numbering in footer, supports {n} / {total} placeholders.

Three-column header/footer with presets and one-click placeholder replacement.

Export multiple PDFs to PNG sequentially, ZIP with subdirectories.

Reverse the entire page order (pdf-lib copy pages).

Read and write title, author, keywords, Creator, and other metadata.

Scope notes on Office conversion, text editing, watermark removal, and more.

Check if a PDF has digital signatures.

Format, minify, and validate JSON syntax, all processed locally in browser.

Config file format conversion (js-yaml).

Config format conversion (@iarna/toml).

Convert between object array and CSV table.

Extract nodes from JSON (jsonpath-plus).

Query JSON with JMESPath (jmespath).

Tree-shaped delta (jsondiffpatch).

Heuristically generate interface from sample JSON.

Generate Go struct from JSON.

Generate Java POJO class from JSON.

Convert JSON array to INSERT statements.

Deep merge multiple JSON objects.

Convert between XML and JSON.

Remove whitespace to minify JSON, show size savings.

Upper/lower, title case, camelCase, kebab-case, snake_case, CONSTANT_CASE, etc.

Sort, deduplicate, remove blank lines, trim each line, reverse line order.

Lines, characters, words, UTF-8 bytes, grapheme clusters.

Literal or regex replacement with configurable flags.

Split into multiple lines by delimiter, or join lines with delimiter.

Match, groups, and highlight preview.

Line-level difference between two texts (diff).

Generate Latin placeholder paragraphs.

Convert title to URL-friendly slug.

Caesar cipher shift 13 (applying twice restores original).

Strip tags via DOMParser and extract visible text.

Add spaces or tabs before each line, or strip leading whitespace.

Ascending/descending and natural sort (numbers by value).

Add sequential numbers with width and custom separator.

Re-wrap paragraphs at given character width (UTF-16 count).

Convert Chinese characters to Pinyin.

Convert between Simplified and Traditional Chinese.

Mask sensitive information with custom keep positions.

Browse, search, and copy emojis by category.

Chinese synonym/antonym lookup with built-in dictionary.

Generate numeronyms like i18n, l10n, a11y.

Convert text to ASCII art banner.

Automatically add spaces between CJK and half-width characters.

Use { { variable } } syntax with auto-detection and batch fill.

Defang URLs for safe sharing, with refang support.

Convert between PNG/JPEG/WebP, supports GIF first frame and SVG rasterization.

Batch compress to WebP/JPG with max dimension and quality controls.

Batch resize to uniform dimensions with contain/cover modes.

Select area or input pixel coordinates, export as PNG/JPG/WebP.

Scale proportionally by longest edge or fixed width/height, no distortion.

Adjustable position, opacity, and font size; batch export as ZIP.

Vertical long image or horizontal strip, export as PNG/JPG/WebP.

View metadata and re-export with privacy info removed.

Chinese/English text recognition (Tesseract.js).

Choose size and export favicon.ico.

Convert WebP, JPG, PNG, GIF, etc. uniformly to PNG.

Convert .webp to .png.

Convert JPEG to PNG.

Export only the first frame of the animation.

Rasterize vector image to PNG.

Composite transparency onto white background.

Decode WebP and export as JPEG.

Smaller size, better for web delivery.

Further reduce image size in compatible environments.

Mirror, 90° rotation, grayscale, and invert via Canvas batch export.

Convert image to greyscale using Canvas.

Crop image into 3×3 grid, export as ZIP.

Add background, border-radius, and shadow to screenshots. Export PNG.

Encode and decode text or files.

RFC 4648 text encode/decode (commonly used for OTP/key display).

Common encode/decode scenarios.

Convert between UTF-8 bytes and hexadecimal.

HTML entities and JSON string escaping.

MD5, SHA-256, and other checksums and digests.

HMAC-SHA1/256/384/512 in hexadecimal.

Passphrase + PBKDF2 key derivation, local encrypt/decrypt.

Configurable length and charset, crypto-secure random.

IEEE polynomial checksum (hexadecimal).

Bitcoin alphabet text encode/decode.

Generate PNG from text, URL, WiFi, etc.

Parse QR code from image (jsQR).

Byte-wise XOR with cycling key, output as hex or Base64.

Classic polyalphabetic cipher for English letter encrypt/decrypt.

Generate keys via Web Crypto, asymmetric encrypt/decrypt for short text.

Bcrypt hash generation and verification.

Chinese SM3 hash algorithm.

Chinese SM4 symmetric encryption/decryption.

Chinese SM2 asymmetric encryption.

Analyze password complexity, show strength bar.

Generate Wi-Fi connection QR code from SSID, password, encryption.

Generate BIP39 mnemonic for Bitcoin/Ethereum wallets.

Generate RSA public/private key pair (PEM format).

Convert between seconds, milliseconds, and date.

Batch generate UUID v4 (crypto.randomUUID).

Time-sortable unique ID, batch generate.

Short random string with customizable alphabet.

px/rem and byte KiB/MB conversions.

Character reference for codes 0–127.

Mod 97 check digit validation.

Bank card number mod-10 validation.

Parse and format to E.164 (libphonenumber-js).

Phonetic alphabet, Morse code, and six-dot Braille.

CODE128/EAN and other 1D barcodes (JsBarcode).

Browser-side transcoding via ffmpeg.wasm (CDN core).

TOTP two-factor authentication code generator.

Generate Authorization header from username and password.

Parse HTTP Cookie header string into table.

Generate/edit JWT with custom header, payload, and secret.

Generate SVG placeholder images with custom dimensions and colors.

Online stopwatch: start/pause/reset/lap.

Add/subtract days, calculate date intervals.

Percentage calculations.

Convert between °C, °F, K temperature units.

Convert between Arabic and Roman numerals.

Look up vendor by MAC prefix (OUI).

Calculate CIDR notation from IP range.

Common port numbers and protocols reference.

Evaluate math expressions with functions and constants.

Estimate remaining time from progress and elapsed time.

Generate random MAC addresses with prefix and case options.

Detect browser, screen, network and system information.

Estimate token count for GPT-4/GPT-3.5/Claude models.

Calculate simplest ratio and reverse compute from known side.

Equal installment / equal principal with payment schedule.

Calculate BMI value and category with reference chart.

Calculate work duration, overtime, and salary estimate.

Fill in meta info and preview share card style (local simulation).

Check common rules and generate robots.txt text.

Generate sitemap.xml fragment from URL list.

Toggle Content Security Policy directives and export header value.

Feature policy header builder with explanations.

Paste env file and view as table (one-click value masking).

Common HTTP security header descriptions and one-click copy examples.

Decompose URL and query parameters into a table.

Internationalized domain name xn-- and Unicode.

Convert between file and data: Base64.

Guess type by magic bytes (PNG/PDF/ZIP etc.).

Extension and MIME type reference.

Indent and minify (js-beautify).

SVG/XML validation and indentation.

Preview rendered output and export.

Common codes lookup and search.

Rough UA string parsing.

Debug keydown key / code values.

Convert between HEX, RGB, HSL and copy as CSS.

WCAG foreground/background contrast ratio.

Convert between CSV and Markdown pipe table.

Convert alphanumeric and common punctuation between full and half width.

Convert amount to Chinese uppercase (yuan, jiao, fen).

Paste .ics and list event summaries.

Decode electronic business card fields into a table.

Unfold folded lines and display key-value pairs.

Validate Chinese ID card number and extract info.

Traditional color names with hex values, click to copy.

Calculate family relationship titles from relationship chain.

Format query/mutation (graphql).

Tree-view browse and search Swagger JSON.

Convert between Java .properties and JSON.

Generate EditorConfig from tech stack presets.

General XML validation and indentation.

Version validity, ordering, and diff (semver).

Render flowchart/sequence diagram source (mermaid).

Format/beautify Nginx config files.

Convert docker run command to docker-compose.yml.

Common regex patterns reference.

Generate fake data like names, emails, addresses.

JS code beautifier/deobfuscator (simple formatting).

Convert cURL commands to Python/JavaScript/Go/PHP/Java code.

Visual box-shadow editor with multi-layer support and live preview.

Adjust each corner independently with live preview.

Visual Flex property editor with live layout preview.

Linear/radial gradients with adjustable color stops and angle.

Visual keyframes editor with preset animations.

Simulate protanopia, deuteranopia, tritanopia, and achromatopsia.

Decode Base64/Hex protobuf data without schema.

Parse header/payload as JSON (signature not verified).

Beautify and minify (sql-formatter).

Select and merge common templates.

Gzip, Deflate, Brotli (streaming API).

Convert 5-field cron expression to human-readable description.

Convert between octal and rwx notation.

CIDR network/broadcast/host range.

CIDR start/end and address count (ip-address).

PEM parse and SHA-256 fingerprint (@peculiar/x509).

Float32/64 hexadecimal with exponent and mantissa.

Binary/octal/decimal/hex and big integers (BigInt).