All utilities
Browse focused, single-purpose tools for quick tasks.
211 utilities
Image
9 · Sorted A-ZCompress Image
Reduce image file size while keeping quality as high as possible.
Compress Image to 100KB
Reduce an image to 100KB or less, automatically.
Compress Image to 200KB
Reduce an image to 200KB or less, automatically.
Convert Image Format
Convert an image between PNG, JPG and WebP, entirely in your browser.
Crop SVG to Content
Trim excess margin from an SVG file by recalculating its viewBox to fit the actual artwork.
Remove Image Background
Remove an image background with AI and download a transparent PNG — processed privately in your browser.
Resize Image
Resize an image by pixels or percentage, right in your browser.
Resize Image to 1080×1080
Resize any image to a 1080×1080 square, ready for Instagram.
Rotate and Flip Image
Rotate an image 90 degrees, or flip it horizontally or vertically.
Add PDF Page Numbers
Stamp sequential page numbers onto every page of a PDF.
Add PDF Watermark
Stamp a diagonal text watermark (e.g. "DRAFT" or "CONFIDENTIAL") across every page of a PDF.
Annotate PDF
Add text notes and highlight boxes to a PDF, page by page.
Compare PDF Files
Compare two PDF files side by side and see exactly what changed, page by page.
Compress PDF
Shrink a PDF toward a target file size by rasterizing and re-compressing every page.
Delete PDF Pages
Remove specific pages from a PDF, keeping the rest.
Extract PDF Pages
Pull specific pages out of a PDF into a new file — also covers splitting a PDF into a page range.
Image to PDF
Combine one or more images into a single PDF, one image per page.
Merge PDF
Combine multiple PDF files into one, in the order you choose.
PDF Page Count & Info
Check a PDF’s page count, title, author and page dimensions.
PDF to Image
Convert every page of a PDF into a PNG or JPEG image.
Protect PDF with a Password
Add a password to a PDF so only someone who knows it can open the file.
Redact PDF
Permanently black out sensitive content in a PDF — the covered content is removed, not just hidden.
Remove PDF Metadata
Strip title, author and other embedded metadata from a PDF before sharing it.
Reverse PDF Page Order
Flip a PDF’s pages back-to-front.
Rotate PDF
Rotate every page in a PDF by 90, 180 or 270 degrees.
Sign PDF
Draw a signature and place it onto a PDF page.
Unlock PDF (Remove Password)
Remove password protection from a PDF you already know the password to.
Video
2 · Sorted A-ZAudio
11 · Sorted A-ZAudio Bitrate Calculator
Calculate an audio file’s bitrate from its file size and duration.
Audio Fade In / Fade Out
Add a fade-in or fade-out to an audio file.
Audio Info Checker
Check an audio file’s duration, sample rate and channel count.
Audio Volume Adjuster
Normalize an audio file’s volume automatically, or set a custom percentage.
Change Audio Speed
Speed up or slow down an audio file.
Convert Audio to MP3
Convert WAV or any browser-playable audio file to MP3, with a chosen bitrate.
Convert Audio to WAV
Convert MP3, AAC, OGG or any browser-playable audio file to WAV.
Mono ↔ Stereo Converter
Convert an audio file between mono and stereo.
Remove Silence from Audio
Automatically cut silent gaps out of an audio file.
Trim Audio
Cut an audio file down to a start/end time range.
Waveform Generator
Visualize an audio file’s waveform.
Subtitle
9 · Sorted A-ZCSV to SRT Converter
Convert spreadsheet subtitle data (CSV) back into a standard SRT subtitle file.
Fix Subtitle Numbering
Renumber SRT cues sequentially from 1 — fixes missing, duplicate or reversed cue numbers.
Shift Subtitle Timing
Move every subtitle cue earlier or later by a custom number of seconds, to fix out-of-sync subtitles.
SRT to CSV Converter
Convert an SRT or VTT subtitle file to a spreadsheet CSV with start time, end time, duration and text.
SRT to JSON Converter
Convert an SRT subtitle file into structured JSON — one object per cue.
SRT to Plain Text
Strip timestamps and numbering from an SRT file, keeping only the dialogue.
SRT to VTT Converter
Convert an SRT subtitle file to WebVTT for use in HTML5 video players.
Subtitle Reading Speed Checker
Analyze subtitle reading speed (CPS), line length (CPL), duration limits, and timestamp overlaps.
VTT to SRT Converter
Convert a WebVTT subtitle file to SRT for use in most media players.
Data
9 · Sorted A-ZCSV to JSON Converter
Convert CSV data into a JSON array of objects.
CSV Viewer and Editor
View CSV as a sortable table, remove duplicate rows, and export the result.
JSON Formatter
Format, validate and minify JSON with clear error messages.
JSON Minifier
Strip whitespace from JSON to make it as small as possible.
JSON to CSV Converter
Convert a JSON array of objects into CSV.
JSON to YAML Converter
Convert JSON into YAML.
XML Formatter
Format (pretty-print) or minify XML with clear error messages.
YAML Formatter
Format and validate YAML, normalizing its indentation.
YAML to JSON Converter
Convert YAML into pretty-printed JSON.
Developer
5 · Sorted A-ZBase64 Encode / Decode
Encode text to Base64 or decode a Base64 string back to text.
Cron Expression Parser and Generator
Convert a cron expression to plain English, or build one from a friendly picker.
JWT Decoder
Decode a JWT's header and payload - does not verify the signature.
Regex Tester
Test a regular expression against sample text and see every match highlighted.
SHA-256 Hash Generator
Generate a SHA-256, SHA-1 or SHA-512 hash of any text.
Web
15 · Sorted A-ZAspect Ratio Tester
Reduce a width×height pair to a simplified ratio (e.g. 1920×1080 → 16:9) and preview it.
Compression Checker
Check whether a URL’s response is served compressed (gzip/brotli) and with what Vary header.
CORS Header Checker
Inspect a URL’s Access-Control-* response headers to see what cross-origin access it allows.
DNS Lookup
Look up A, AAAA, MX, TXT, CNAME or NS records for a domain.
HTTP Headers Checker
See every HTTP response header a URL returns.
HTTP Status Checker
Check the HTTP status code a URL returns, following any redirects.
Open Graph / Twitter Card Preview
Paste a page's HTML source to preview how its Open Graph and Twitter Card tags render as a social share card.
Redirect Chain Viewer
See every hop a URL redirects through before landing on its final destination.
Robots.txt Checker
Fetch and parse a live site’s robots.txt — user-agent rules and listed sitemaps.
Security Headers Checker
Check a URL for common HTTP security headers (HSTS, CSP, X-Frame-Options and more).
Sitemap Checker
Fetch and validate a live site’s sitemap.xml — entry count and a preview of the URLs.
SSL Certificate Checker
Look up a domain's SSL/TLS certificate — issuer, validity dates and days until expiry — from public Certificate Transparency logs.
URL Expander
Reveal the real destination behind a shortened or tracking link before you click it.
URL Parser
Break a URL down into its protocol, host, path, query parameters and hash.
Viewport Tester
Preview a website at common device widths — phone, tablet, laptop and desktop.
SEO
16 · Sorted A-ZCanonical Tag Generator
Generate a canonical link tag to avoid duplicate-content issues.
Google Search URL Generator
Build a Google search URL with site:, filetype:, exclude and exact-phrase operators.
Google SERP Preview
See how your title and description will look in Google search results.
Hreflang Tag Generator
Generate hreflang link tags for a page available in multiple languages.
JSON-LD Schema Generator
Generate JSON-LD structured data for Article, Product, FAQ, Local Business or Breadcrumb schema.
Keyword Density Calculator
See which words appear most often in your content, and at what percentage.
Meta Description Length Checker
Check whether your meta description fits Google search results without being cut off.
Meta Tag Generator
Generate the standard title, description, charset, viewport and robots meta tags.
Meta Title Length Checker
Check whether your page title fits Google search results without being truncated.
Open Graph Generator
Generate Open Graph and Twitter Card meta tags for social-share previews.
Reading Time Calculator
Estimate how long an article takes to read, based on a 200 words-per-minute pace.
Robots.txt Generator
Generate a robots.txt file with custom Allow/Disallow rules per user-agent and a sitemap link.
Slug Generator
Turn a title into a clean, URL-safe slug — accented characters are transliterated.
Twitter Card Preview
See how your page will look when shared as a Twitter/X card.
UTM Builder
Build a campaign URL with utm_source, utm_medium, utm_campaign and more.
UTM Parser
Paste a campaign URL to see its utm_source, utm_medium, utm_campaign and other parameters.
QR & Barcode
4 · Sorted A-ZBarcode Generator
Generate a downloadable CODE128, EAN-13, UPC or CODE39 barcode from any value.
QR Code Generator
Generate a downloadable QR code from any URL or text — updates live as you type.
Text QR Code Generator
Encode any plain text as a QR code.
URL QR Code Generator
Turn any link into a scannable QR code.
Text
17 · Sorted A-ZAdd Prefix/Suffix to Lines
Add the same text before and/or after every line in a list.
camelCase Converter
Convert text to camelCase.
Character Counter
Count characters, words and sentences — handy for tweet, meta description and bio limits.
kebab-case Converter
Convert text to kebab-case.
Lowercase Converter
Convert text to lowercase.
Number Lines
Add a sequence number in front of every line in a list.
PascalCase Converter
Convert text to PascalCase.
Remove Blank Lines
Strip empty lines from a block of text.
Remove Duplicate Lines
Delete repeated lines from a list, keeping the first occurrence.
Reverse Line Order
Flip the order of lines in a list.
Sentence Case Converter
Convert text to Sentence case.
Shuffle Lines
Randomize the order of lines in a list.
snake_case Converter
Convert text to snake_case.
Sort Lines Alphabetically
Sort a list of lines from A to Z (or reverse).
Title Case Converter
Convert text to Title Case.
Uppercase Converter
Convert text to UPPERCASE.
Word Counter
Count words, characters, sentences and estimated reading time as you type.
Generators
20 · Sorted A-Z.htaccess Redirect Generator
Generate Apache .htaccess redirect rules from a list of old and new URLs.
Avatar Initials Generator
Generate a round avatar image with 1-2 initials, for use as a profile-photo fallback.
Coin Flip
Flip a virtual coin — heads or tails.
Dice Roller
Roll a virtual d4, d6, d8, d10, d12 or d20.
Fake Data Generator
Generate realistic-looking fake test data - people, addresses, companies or test credit cards.
Favicon HTML Generator
Generate the standard set of favicon <link> tags for common sizes and devices.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum paragraphs.
Netlify/Cloudflare _redirects Generator
Generate a _redirects file from a list of old and new URLs, for Netlify or Cloudflare Pages.
Nginx Redirect Generator
Generate Nginx rewrite redirect rules from a list of old and new URLs.
Passphrase Generator
Generate a memorable multi-word passphrase instead of a random-character password.
Placeholder Image Generator
Generate a solid-color placeholder image at any size, labeled with its dimensions.
Random Date Generator
Pick a random date between two dates.
Random List Picker
Paste a list and randomly pick one or more items from it.
Random Name Generator
Generate random full names for testing, sample data or naming characters.
Random Number Generator
Generate a random whole number between a min and max value.
Secure Password Generator
Generate a strong random password with custom length and character sets.
SVG Placeholder Generator
Generate a scalable SVG placeholder image at any size, labeled with its dimensions.
Username Generator
Generate random username suggestions like an adjective, a noun and a number.
UUID Generator
Generate random v4 UUIDs.
Web App Manifest Generator
Generate a manifest.json for a PWA/installable web app.
Date & Time
10 · Sorted A-ZAge Calculator
Find your exact age in years, months and days from your date of birth.
Business Days Calculator
Count the working days (Monday to Friday) between two dates.
Countdown Timer
Count down live to any future date and time.
Date Difference Calculator
Calculate the number of days, weeks, months and years between two dates.
Date Format Converter
Convert a Unix timestamp or date string into every common format at once — Unix seconds/milliseconds, ISO 8601, UTC and local time.
Day of Year Calculator
Find a date's ordinal day number within its year (1–365 or 366).
Duration Calculator
Calculate the exact elapsed time between two dates and times, down to the second.
Leap Year Checker
Check whether any year is a leap year, using the exact Gregorian calendar rule.
Timezone Converter
See what time it is in another timezone for any date and time you pick.
Week Number Calculator
Find a date's ISO 8601 week number.
Unit Converters
6 · Sorted A-ZArea Converter
Convert between m², km², hectares, ft², acres and mi².
Digital Storage Converter
Convert between bytes, KB, MB, GB and TB.
Length Converter
Convert between mm, cm, m, km, inch, feet, yard and mile.
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin.
Volume Converter
Convert between ml, liters, gallons, cups, tablespoons and teaspoons.
Weight Converter
Convert between kg, g, mg, ton, lb and oz.
Calculators
5 · Sorted A-ZDiscount Calculator
Work out the price after a discount, and how much you save.
Loan & Mortgage Calculator
Estimate the monthly payment, total paid, and total interest on a fixed-rate loan.
Margin Calculator
Calculate profit margin and markup from revenue and cost.
Percentage Calculator
Find what percent a value is of another, or how much a percentage change is.
Tip Calculator
Work out the tip, total bill, and split it evenly between people.
File & Archive
17 · Sorted A-ZCalculate File Hash
Get the SHA-1, SHA-256 or SHA-512 hash of any file, right in your browser.
Change File Extension
Swap a filename’s extension while keeping the rest of the name.
Compare File Hash
Check whether two files are byte-for-byte identical by comparing their hashes.
Compress File to GZIP
Compress a single file into a .gz file, entirely in your browser.
Create ZIP File
Combine multiple files into one ZIP archive, entirely in your browser.
Decompress GZIP File
Decompress a .gz file back to its original content, entirely in your browser.
Extract File Extension
Pull just the extension out of a filename.
Extract ZIP File
View a ZIP archive's contents and download only the files you need — no full extraction required.
File Type / MIME Detector
Detect a file's real type from its content and check it against the extension the filename claims.
Filename Sanitizer
Clean a filename for safe use in URLs, shells and every filesystem — accents transliterated, unsafe characters replaced.
Find Duplicate Files
Identify duplicate files across multiple uploads by comparing their exact cryptographic hashes.
Join Split Files
Reassemble a file that was split into parts by the Split File tool.
Remove Filename Spaces
Replace spaces in a filename with hyphens.
Split File
Split a large file into smaller parts of a set size, to send or store separately.
TAR to ZIP Converter
Convert a .tar archive to a .zip archive, keeping the same files inside.
Verify File Checksum
Verify a downloaded file’s integrity by comparing its SHA-1, SHA-256 or SHA-512 hash against an expected checksum.
ZIP to TAR Converter
Convert a .zip archive to a .tar archive, keeping the same files inside.
Color & Design
12 · Sorted A-ZBorder Radius Generator
Build a CSS border-radius value with a live preview, per corner or all at once.
Color Name Finder
Find the closest standard CSS color name for any HEX color.
Color Palette Generator
Generate complementary, analogous, triadic and monochromatic palettes from one base color.
Contrast Checker (WCAG)
Check the contrast ratio between two colors against WCAG AA/AAA thresholds.
CSS Gradient Generator
Build a CSS linear-gradient from two colors and an angle, with a live preview.
CSS Pattern Generator
Generate a repeating background pattern (stripes, dots, checkerboard or grid) as pure CSS.
CSS Shadow Generator
Build a CSS box-shadow or text-shadow value with a live preview.
CSS Triangle Generator
Build a pure-CSS triangle (the zero-size-box-plus-borders trick) in any direction.
HEX to RGB Converter
Convert a HEX color code to RGB (and HSL).
HSL to HEX Converter
Convert HSL values to a HEX color code (and RGB).
Image Palette Extractor
Pull the most common colors out of any image.
RGB to HEX Converter
Convert RGB values to a HEX color code (and HSL).
Privacy
3 · Sorted A-ZFilename Privacy Cleaner
Replace a filename with a random name before sharing a file, keeping only its extension.
Image Metadata Viewer
See the EXIF and GPS metadata embedded in a photo - camera model, date taken, and location - before you decide whether to share it.
Remove EXIF from Image
Strip EXIF, GPS location and other embedded metadata from a photo before sharing it — the original image format and quality are kept.
Ecommerce
7 · Sorted A-ZAmazon Product White Background Checker
Validate if your product image background is pure white (#FFFFFF) and meets Amazon & Etsy main-image listing requirements.
Bundle Price Calculator
Add up item prices and apply a bundle discount to see the final price and total savings.
Dimensional Weight Calculator
Calculate shipping dimensional (volumetric) weight from box dimensions and compare it to the actual weight.
Marketplace Fee Calculator
Work out your net proceeds after a marketplace’s percentage fee and any flat per-listing fee.
Product Image Size Checker
Check an image’s pixel dimensions and aspect ratio against Amazon, Etsy or Shopify’s minimum main-image requirements.
Product Title Length Checker
Check a product title against Amazon, Etsy or Shopify’s title field character limit.
SKU Generator
Generate random, scannable SKU codes with an optional category prefix.
Creator
8 · Sorted A-ZCaption Line Break Formatter
Wrap a caption to a maximum line length, so it reads cleanly on platforms that render line breaks literally.
Hashtag Formatter
Turn a list of words or phrases into ready-to-paste #hashtags.
Resize Image for Instagram Portrait
Resize any image to 1080×1350 (4:5), Instagram’s feed portrait size.
Resize Image for Reels / Story / TikTok
Resize any image to 1080×1920 (9:16) — the shared full-screen size for Instagram Story/Reels, TikTok and YouTube Shorts.
Resize Image for YouTube Thumbnail
Resize any image to 1280×720 (16:9), YouTube’s recommended thumbnail size.
Speaking Time Calculator
Estimate how long a video or podcast script takes to read aloud, at an adjustable speaking pace.
YouTube Thumbnail Checker
Check a thumbnail image against YouTube’s recommended 1280×720, 16:9, under-2MB spec.
YouTube Title Length Checker
Check a video title against YouTube’s 100-character title limit.
Font & Typography
8 · Sorted A-ZCSS Unit Converter (px, rem, em)
Convert between CSS px, rem and em units for any base font size.
Fancy Text Generator
Convert plain text into bold, italic, small caps, superscript and subscript Unicode styles.
Invisible Character Detector
Find hidden zero-width and non-breaking-space characters that can lurk inside pasted text.
Line Height Calculator
Convert a CSS line-height between a unitless ratio and a pixel value.
Modular Scale Calculator
Generate a consistent type scale from a base size and a ratio.
Text Width Estimator
Estimate how wide a piece of text will render at a given font size and family.
Whitespace Viewer
Visualize spaces, tabs and non-breaking spaces that are otherwise invisible.
Zalgo Text Remover
Strip the stacked combining marks that make "zalgo" text unreadable.