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All tools

Everything in one place. Filter by category or search to find what you need.

139 tools

139 tools

Image

  • Resize images

    Resize and convert your images (JPEG, PNG, WebP) without uploading them.

  • Crop image

    Crop your images with an interactive preview, drag and resize the crop area. No upload.

  • Add watermark

    Overlay a text or image watermark on your photos. Opacity, position, tiling, all in the browser.

  • Rotate & flip images

    Rotate images 90/180/270° or flip them horizontally and vertically, without uploading.

  • Redact image regions

    Blur or black-box sensitive areas of your images before sharing, no upload.

  • Compress images

    Reduce image file size without uploading. Quality slider or target file size in KB. Batch supported.

  • Convert HEIC to JPG

    Convert iPhone HEIC/HEIF photos to JPG or PNG without uploading them.

  • Image to Base64

    Convert images to Base64 data URIs (and back) directly in your browser. Copy, CSS snippet, no upload.

  • Circle crop image

    Crop any image to a perfect circle with transparent corners. Download as PNG. No upload.

  • Color palette extractor

    Extract dominant colors from an image as HEX swatches. Copy any color. No upload.

  • Image comparison slider

    Compare two images side-by-side or with a slider (before/after). No upload.

  • Favicon generator

    Generate favicon PNGs at 16/32/48/180/192/512 px from any image. No upload.

  • Color blindness simulator

    Simulate protanopia, deuteranopia, tritanopia and achromatopsia on an image. No upload.

  • SVG optimizer

    Optimize and minify SVG files with SVGO directly in your browser. No upload.

PDF

  • Merge PDF files

    Combine multiple PDF files into one, directly in your browser.

  • Split PDF

    Extract, reorder or delete pages from a PDF without uploading it.

  • Compress PDF

    Reduce PDF file size by losslessly optimizing its internal structure, without uploading.

  • Watermark PDF

    Add a text or image watermark to every page of a PDF, without uploading.

  • Rotate PDF pages

    Rotate selected pages of a PDF (90, 180 or 270°) without uploading.

  • Add page numbers

    Add page numbers to every page of a PDF (position, font size, format) without uploading.

  • PDF N-up (pages per sheet)

    Place 2, 4, 6, 8, 9 or 16 PDF pages on each sheet to save paper. 100% in your browser, no upload.

  • PDF metadata remover / editor

    Remove or edit a PDF's hidden metadata (author, title, software…) in your browser. No upload.

  • Sign a PDF

    Draw your signature and stamp it onto a PDF, directly in your browser. No upload.

  • PDF Editor

    Add text, images, highlights and white-out boxes on top of a PDF, then download. No upload.

  • PDF to images

    Convert each PDF page to PNG or JPG directly in your browser.

  • PDF to text

    Extract text content from a PDF and download it as a .txt file, without uploading.

  • Password-protect PDF

    Encrypt a PDF with a password directly in your browser. No upload.

  • Unlock PDF (remove password)

    Remove the password from a PDF you can already open, entirely in your browser. No upload.

  • Crop PDF pages

    Visually crop any PDF page, select a region and apply to all pages or just one, without uploading.

  • Organize PDF pages

    Reorder, rotate or delete pages in a PDF visually, no upload, 100% in your browser.

  • Add PDF Header & Footer

    Add custom header and footer text to every page of a PDF, supports {page}, {total} and {date} tokens. 100% in your browser, no upload.

  • Bates Numbering

    Stamp sequential Bates labels (prefix + zero-padded number + suffix) on every page of a PDF. Legal-grade, 100% offline.

  • Resize PDF pages

    Scale every page to A4, Letter, Legal, A3 or A5, or by percentage, without uploading.

  • Flatten PDF

    Make form fields and annotation appearances permanent (non-editable) in your browser. No upload.

  • Fill PDF forms

    Fill interactive form fields (text, checkboxes, radio, dropdown) in a PDF directly in your browser. No upload.

  • Alternate & Mix two PDFs

    Interleave pages from two PDFs (A1, B1, A2, B2…) for double-sided scanning. No upload.

  • Extract images from PDF

    Pull every embedded image out of a PDF and download them as PNG files, without uploading.

  • PDF to Grayscale

    Convert a colour PDF to grayscale entirely in your browser, no upload.

  • Add PDF bookmarks

    Add a clickable bookmark outline (table of contents) to any PDF, define titles, page numbers and nesting. 100% in your browser, no upload.

  • Repair PDF

    Rebuild a damaged or bloated PDF into a clean, well-formed copy, entirely in your browser, no upload.

  • Deskew scanned pages

    Straighten skewed scanned PDFs or images entirely in your browser, no upload.

  • OCR · image/PDF to text

    Extract text from scanned images or PDFs entirely in your browser, runs offline, no upload.

  • HTML to PDF

    Convert pasted HTML to a PDF in your browser (best-effort, rasterised). No upload.

  • Images to PDF

    Combine one or more images (JPG, PNG, WebP) into a single PDF, right in your browser.

  • Word to PDF

    Convert .docx files to PDF in your browser. Best-effort, complex layouts may differ.

Video

  • Compress video

    Reduce video file size via in-browser H.264 re-encode. No upload, no server.

  • Merge video files

    Concatenate multiple video files (MP4, MOV, WebM…) into one. Fast copy or re-encode. No upload.

  • Rotate video

    Rotate or flip a video (90°/180°/270°, horizontal/vertical) directly in your browser. No upload.

  • Crop video

    Crop a video to a rectangle or an aspect ratio (1:1, 16:9, 9:16…) in your browser. No upload.

  • Video converter

    Convert video between MP4, WebM, MKV and MOV (H.264/H.265/VP9) in your browser. No upload.

  • Add audio to video

    Add or replace the soundtrack of a video with an audio file, in your browser. No upload.

  • Screen recorder

    Record your screen in your browser. Nothing is uploaded.

  • Webcam recorder

    Record your webcam and mic in your browser. Nothing is uploaded.

  • Trim video

    Cut a video to a start/end time range directly in your browser. Fast stream copy or precise re-encode. No upload.

  • Mute video

    Remove the audio track from a video (silence it) directly in your browser. No upload.

  • Video to GIF

    Convert a video clip into an animated GIF directly in your browser. No upload.

  • GIF to video (MP4)

    Convert an animated GIF into a small MP4 video directly in your browser. No upload.

  • Extract video frames

    Extract still frames from a video as PNG or JPG images directly in your browser. No upload.

Audio

  • Audio cutter

    Cut a clip out of an MP3, WAV or M4A right in your browser: fade in/out, ringtone preset. No upload.

  • Audio volume

    Boost, reduce or normalize the loudness of an audio file in your browser. No upload.

  • Audio speed

    Speed up or slow down audio (0.25×–4×) while keeping the pitch. In your browser, no upload.

  • Reverse audio

    Play an audio file backwards in your browser. No upload.

  • Vocal remover (karaoke)

    Reduce centred vocals to make a karaoke track, in your browser. No upload.

  • MP3 tag editor (ID3)

    Edit MP3 ID3 tags (title, artist, album, cover…) in your browser. No upload.

  • Voice recorder

    Record your microphone in your browser. Nothing is uploaded.

  • Audio converter

    Convert audio to MP3, WAV or AAC directly in your browser. No upload.

  • Merge audio files

    Concatenate multiple audio files (MP3, WAV, M4A, OGG…) into one. Drag to reorder. No upload.

  • Extract audio from MP4

    Extract the audio track from your MP4 videos as MP3, without server-side conversion.

QR codes

  • Styled QR code generator

    Generate beautiful, styled QR codes with custom colors, gradients, shapes and a center logo. 100% local.

  • QR code scanner

    Decode a QR code from an image file or your device camera. 100% local, no upload.

Developer

  • Archive extractor

    Extract ZIP, RAR, 7z, TAR and GZ archives in your browser. No upload.

  • JSON Formatter

    Format, validate and minify JSON directly in your browser. No upload.

  • Base64 Encoder / Decoder

    Encode or decode Base64, text and files. No upload, 100% local.

  • URL Encoder / Decoder

    Percent-encode or decode URL strings. No upload, 100% local.

  • Hash Generator

    Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files. No upload.

  • JWT Decoder

    Decode a JWT (header, payload, expiry) without sending it anywhere. No signature verification.

  • Text Diff

    Compare two texts line by line and see differences highlighted. No upload.

  • UUID Generator

    Generate cryptographically random UUID v4 values. Bulk generation. No upload.

  • Case Converter

    Convert text between camelCase, snake_case, kebab-case, Title Case and more. No upload.

  • Text / code viewer

    Open text and code files that your phone refuses, Markdown, HTML, JSON, CSV, XML and more.

  • Regex Tester

    Test regular expressions against text with highlighted matches and capture groups. No upload.

  • Color Converter

    Convert colors between HEX, RGB, HSL, HSV and CMYK. WCAG contrast checker included. No upload.

  • Color Scheme Generator

    Generate complementary, analogous, triadic, tetradic and monochromatic palettes from a base color. No upload.

  • Timestamp Converter

    Convert Unix epoch timestamps to human dates (UTC + local) and back. Auto-detects seconds vs milliseconds.

  • Word Counter

    Count words, characters, sentences, paragraphs and estimate reading time. Live, no upload.

  • Password Generator

    Generate strong, random passwords with custom rules. Uses crypto.getRandomValues. No upload.

  • Lorem Ipsum Generator

    Generate lorem ipsum placeholder text by paragraphs, sentences or words. Copy in one click. No upload.

  • Data Converter

    Convert data between JSON, YAML and CSV formats. No upload.

  • Minify / Beautify

    Minify or beautify HTML, CSS and JavaScript. No upload.

  • AES Encrypt / Decrypt

    Encrypt or decrypt text using AES-256-GCM. Your passphrase never leaves your browser.

Date & time

  • Date difference

    Count the days, weeks, months and years between two dates, entirely in your browser, nothing uploaded.

  • Add or subtract dates

    Add or subtract years, months, weeks and days from any date, privately in your browser.

  • Age calculator

    Work out an exact age in years, months and days from a birth date, 100% in your browser.

  • Day of the week

    Find what day of the week any date falls on, plus day-of-year and week number. Private, offline.

  • ISO week number

    Get the ISO-8601 week number for any date, with the ISO week-year. Private and offline.

  • Leap year checker

    Check whether any year is a leap year and why, with the nearest leap years. Offline, private.

  • Days until a date

    Count down the days until any date (or how many days ago it was). Private, in-browser.

  • Quarter of a date

    Find which calendar quarter a date belongs to, with the quarter's start and end. Offline.

  • Time since a date

    Count up the time elapsed since a past date, years, months, days and totals. In-browser.

  • Business days calculator

    Count working days (Mon–Fri) between two dates, excluding holidays. Private, in-browser.

  • Time duration calculator

    Work out the duration between two times of day, including overnight spans. In-browser.

  • Nth weekday finder

    Find the date of the Nth weekday of a month (e.g. the 3rd Monday). Private, offline.

  • Sleep cycle calculator

    Find the best bedtimes or wake-up times based on 90-minute sleep cycles. In-browser.

  • ISO 8601 duration converter

    Parse and convert ISO 8601 durations (P1Y2M…) into components and seconds. In-browser.

  • Date format converter

    Convert a date into ISO, US, European, dotted, compact and Unix formats. In-browser.

  • Cron expression parser

    Parse a cron expression and preview its next run times. Private, in-browser.

  • Date details

    Everything about a date: weekday, week, quarter, leap year, zodiac and more. In-browser.

  • Countdown timer

    Count down to any date and time, with a shareable link. Live, private, in-browser.

  • Online timer

    A simple countdown timer with a sound alert. No signup, runs in your browser.

  • Online stopwatch

    A precise stopwatch with laps. No signup, runs entirely in your browser.

  • Pomodoro timer

    Focus with the Pomodoro technique: work/break intervals with sound. In-browser.

  • Timezone converter

    Convert a date and time between any two IANA timezones. No upload, runs entirely in your browser.

  • Timezone difference

    See the current UTC offset difference between any two IANA timezones. Private, in-browser.

  • Timesheet calculator

    Calculate daily worked hours, totals, overtime and pay from clock-in/out times. Private, offline, no upload.

  • Sunrise & sunset times

    Get accurate sunrise, sunset, solar noon and day length for any location and date. Private, offline, no upload.

  • World clock

    Live local times for cities around the world, side by side. Private, offline, no upload.

  • Moon phase

    See the moon phase for any date, its illumination and the next full and new moons. Private, offline, no upload.

Calculators

  • BMI Calculator

    Calculate your Body Mass Index instantly, no upload, no server, 100% private.

  • Tip Calculator

    Calculate tip amount, total bill and per-person split instantly, no upload, fully offline.

  • VAT & Tax Calculator

    Add or remove VAT and sales tax instantly. All calculations stay on your device, nothing is uploaded.

  • Fraction Calculator

    Add, subtract, multiply or divide fractions instantly, results auto-reduced, decimal shown. 100% offline, no upload.

  • Percentage calculator

    Work out X% of Y, what percent X is of Y, percentage change, and increase/decrease by %. No upload.

  • Cooking converter

    Convert cooking units, cups, grams, ml, oz, by ingredient, plus °F ↔ °C. No upload.

  • Unit converter

    Convert length, mass, temperature, volume, area, speed, data and time units. No upload.

  • Currency converter

    Convert between 200+ currencies with daily rates, amounts stay in your browser. No upload.

  • Scientific calculator

    Evaluate expressions with functions, powers and constants, sin, cos, log, √, π. No upload.

  • GPA Calculator

    Calculate your Grade Point Average instantly, weighted by credits, fully offline. Your data never leaves your device.

  • Grade Calculator

    Calculate your weighted average grade and find out what score you need on your final exam.

  • Running Pace Calculator

    Calculate your running pace, time or distance instantly in your browser - no upload, 100% private.

  • Loan Calculator

    Calculate monthly payments, total cost and interest for any fixed-rate loan. 100% offline, no data leaves your device.

  • Compound & Simple Interest Calculator

    Calculate compound or simple interest on any investment or loan, fully offline, nothing leaves your device.

  • Random Number Generator

    Generate random integers in any range, secure, offline, and private.

  • Calorie Calculator

    Calculate your BMR and TDEE to find daily calorie needs for weight loss, maintenance, or gain, 100% private, no upload.

  • Mortgage Calculator

    Estimate your monthly mortgage payment (principal, interest, tax, insurance, PMI), 100% private, no upload.

  • Body Fat & Ideal Weight Calculator

    Estimate your body fat percentage and ideal weight instantly, US Navy method, 100% offline, no data leaves your device.

Privacy

  • Remove PDF annotations

    Strip comments, highlights, links and form fields from a PDF without uploading. Privacy-safe.

  • Read EXIF metadata

    View and strip EXIF metadata from your photos without sending them to a server.

  • Content Credentials (C2PA) reader

    Read the C2PA / Content Credentials provenance of an image or file in your browser. No upload.

  • Office metadata remover

    Remove the hidden document properties (author, company, dates…) from Word, Excel and PowerPoint files. 100% in your browser, no upload.