Skip to content

Search tools and articles /

Browse 600 toolsSee every tool →

Merge PDFCombine two or more PDF files in the order you choose.
Split PDFSplit one PDF into separate files by page or by the ranges you type.
Compress PDFRebuild a PDF's internal structure to save space.
PDF to ImagesRender PDF pages as PNG or JPG images at the resolution you pick.

All 44 →

Image CompressorShrink JPEG, PNG and WebP files with settings you control.
Image ResizerResize JPEG, PNG and WebP images to fit, fill or exact dimensions.
Image CropperCrop photos with a grid and fixed or print-size ratios.
Image Format ConverterConvert JPEG, PNG and WebP images between the three formats.

All 58 →

Text and Writing 45

Word CounterCount words and characters, or check a length guide.
Text Case ConverterChange the capitalization of your text to any of thirteen case styles.
Text CompareCompare two pieces of text and see exactly what was added or removed.
Remove Duplicate LinesRemove repeated lines from a list while keeping the order you pasted.

All 45 →

Video and Audio 41

Subtitle ConverterConvert supported subtitle cue formats.
Subtitle Editor and Sync ShifterEdit subtitle cues and shift their timing.
Audio Trimmer and CutterTrim a PCM WAV at sample boundaries.
Audio JoinerJoin ordered WAV clips with optional fades.

All 41 →

Data and Spreadsheets 39

CSV/JSON ConverterConvert CSV, TSV, JSON, XML and Excel tables both ways.
CSV ViewerFilter, sort and export matching CSV rows.
CSV CleanerApply chosen cleanup rules to a CSV and download the result.
CSV Merge and JoinJoin two CSV or Excel tables on one or more key columns.

All 39 →

JSON Formatter and ValidatorFormat JSON and explore a collapsible object tree.
Base64 Encoder and DecoderEncode text or a file as Base64, or decode it back.
URL Encoder, Decoder and Query EditorEncode, decode and edit the parts of a web address.
JWT Decoder and Claims InspectorRead a JWT header and payload, with claims shown as dates.

All 76 →

Unit Converters 39

Length ConverterConvert a length between metric, imperial and nautical units.
Mass and Weight Unit ConverterConvert a mass between metric and imperial units, naming each ton.
Temperature ConverterConvert a temperature between Celsius, Fahrenheit and Kelvin.
Cooking Measurement ConverterEstimate cooking volume or mass from an ingredient density.

All 39 →

Math and Statistics 40

Percentage CalculatorWork out a percentage of a number, a change or a difference.
Fraction CalculatorAdd, subtract, multiply, divide or simplify exact fractions.
Ratio and Proportion CalculatorSimplify a ratio, or solve one missing value in a proportion.
Descriptive Statistics CalculatorSummarize a list of numbers with mean, median and range.

All 40 →

Discount CalculatorCalculate a sale price, the discount amount and any tax.
Loan Payment CalculatorEstimate the fixed payment, total paid and total interest on a loan.
Compound Interest CalculatorEstimate how a balance grows with compound interest and contributions.
Tip CalculatorCalculate a tip, bill total and amount per person.

All 37 →

Date and Time 27

Date Difference CalculatorFind the interval between two dates in days and weeks.
Age CalculatorCalculate an exact age on a chosen date, with the next birthday.
Add or Subtract DatesMove a date forward or back by whole years, months, weeks and days.
Time Zone ConverterConvert one local time into another named time zone.

All 27 →

Health and Fitness 24

BMI CalculatorCalculate adult BMI from height and weight.
Daily Calorie Needs CalculatorEstimate resting and daily energy use for an adult.
Running Pace CalculatorTurn a distance and time into pace per kilometer and mile.
Heart Rate Zone CalculatorSee moderate and vigorous heart-rate ranges from an adult age.

All 24 →

Web, SEO and Marketing 48

UTM BuilderAdd UTM campaign tags to any web link and copy the result.
Favicon GeneratorMake favicon files and a web app icon from one image.
SERP Snippet PreviewPreview how a title, URL and description look in search results.
Open Graph PreviewPreview a social link card from your title, description and image.

All 48 →

Security and Privacy 39

Password GeneratorGenerate random passwords or word passphrases in your browser.
Hash and Checksum GeneratorHash text or files and compare a supplied checksum.
Password Strength CheckerGet a local, dictionary-based estimate of a password's strength.
CSP Generator and Pasted-Policy CheckerDraft a Content Security Policy from a strict baseline.

All 39 →

Generators and Random 43

QR Code GeneratorCreate a static QR code you can download as a PNG or SVG image.
Wi-Fi QR CodeMake a scannable code for a Wi-Fi network name and password.
vCard QR CodePut contact details in a QR code that a phone can scan.
Random Number GeneratorDraw whole numbers inside a range, with repeats or sorting.

All 43 →

Guides Blog Saved

Search tools

Search tools and articles

All tools Saved tools

Menu

All tools PDF Image Text and Writing Video and Audio Data and Spreadsheets Developer Unit Converters Math and Statistics Finance Date and Time Health and Fitness Web, SEO and Marketing Security and Privacy Generators and Random Saved tools Guides Blog

Recent tools

Tools you open will appear here.

Home
Text and Writing
Compare

Compare

See what changed between two versions.

1 tool in this part of the catalogue.

Search Compare

Search all 1 tools in this category.

Text Compare

Compare two pieces of text and see exactly what was added or removed.

Free browser tools for files, text and numbers. Most tools run on your device and do not upload your files.

© 2026 UseFreeTools

Categories

PDF Image Text and Writing Video and Audio Data and Spreadsheets Developer Unit Converters Math and Statistics Finance Date and Time Health and Fitness Web, SEO and Marketing Security and Privacy Generators and Random

About

About Contact Privacy Terms Guides Blog