Tool index
Browse all free online browser tools
Find a focused browser tool for images, developer tasks, calculations, PDFs, text, or design. No login is required, and supported file tasks run locally in your browser.
Category
Free Image Tools
Resize, compress, and convert images locally in your browser.
Image Resizer
Resize JPG, PNG, and WebP images by exact pixels or percentage. Keep the aspect ratio, choose the output format, compare dimensions and file size, and download the locally processed result without logging in.
Open toolImage Compressor
Reduce JPG, PNG, or WebP file size by quality or target KB. Compare the original and compressed result, then download the smaller file locally with no login or upload.
Open toolCompress Image to 100KB
Set a 100KB maximum for one JPG, PNG, or WebP image. The tool searches for the highest practical quality, reduces dimensions only when needed, and shows the measured result before download. Free to use with no login.
Open toolHEIC to JPG Converter
Convert HEIC or HEIF photos to JPG for websites, email, and upload forms. Choose JPG quality, check dimensions and file size, then download the JPEG without logging in.
Open toolPNG to JPG Converter
Convert PNG images to JPG in your browser, choose the JPG quality and background for transparent pixels, compare the result, and download it without signing in.
Open toolWebP to PNG Converter
Convert WebP to PNG when you need transparency or wider editing compatibility. Preserve the image dimensions, compare the output, and download the PNG without uploading or signing in.
Open toolJPG to PNG Converter
Convert JPG or JPEG images to PNG while keeping the original dimensions. Compare the output details and download the locally processed file with no login required.
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Free Developer Tools
Format, decode, inspect, and convert common developer data without sending it to a server.
JSON Formatter & Validator
Paste JSON or open a file to format, validate, beautify, or minify it. Choose indentation, review parser errors, and copy or download the result in your browser with no login.
Open toolRegex Tester
Test a JavaScript regular expression against sample text. Inspect matches, indexes, capture groups, flags, and syntax errors before using the pattern in code.
Open toolFree Base64 Encoder & Decoder Online
Encode or decode UTF-8 and URL-safe Base64 text online. Paste a value, copy the result, or download it from your browser without registration or login.
Open toolFree Unix Timestamp Converter Online
Convert Unix timestamps in seconds or milliseconds to UTC, local time, or ISO 8601. Convert dates back to timestamps online with no registration or login.
Open toolFree URL Encoder & Decoder Online
Encode or decode URL components, full URLs, and query parameters with UTF-8 percent encoding. Copy the result online without registration or login.
Open toolJWT Decoder
Inspect JWT headers, payloads, claims, expiry times, and signature segments in your browser. Decode locally with no login; this tool does not verify signatures.
Open toolUUID Generator
Generate one random UUID v4 or a batch of up to 100 in your browser. Choose canonical, uppercase, GUID-braced, or compact display, then copy individual values or export the full list as TXT, CSV, or JSON with no registration or login.
Open toolHash Generator
Use this hash generator to create a SHA digest from exact UTF-8 text or one local file. Choose SHA-256, SHA-384, SHA-512, or legacy SHA-1, then compare, copy, or download the result as hex or Base64 without sending the source to an external hashing service.
Open toolJSON to CSV Converter
Paste one JSON object or an array of objects, or load a local .json file. Choose the delimiter, preview the rows and columns, and copy or download the CSV without registration or login.
Open toolCSV to JSON Converter
Paste CSV or load one local .csv or .txt file, choose the delimiter and JSON format, then convert the header row and records into a JSON array. Quoted fields are parsed in your browser, values stay strings, and no registration or login is required.
Open toolURL Slug Generator
Turn a title, product name, or page label into a readable URL slug in your browser. Choose the separator, case, character policy, stop-word rule, and optional length cap, then copy the slug or a slash-prefixed path with no registration.
Open toolCategory
Free Online Calculators
Calculate dates, percentages, time zones, and unit conversions with focused browser tools.
Age Calculator
Enter a date of birth to calculate exact age in years, months, and days. Check age on any date and see total days, weeks, or months with no login required.
Open toolPercentage Calculator
Calculate a percentage of a number, find what percent one value is of another, and work out percentage increase, decrease, change, or reverse values instantly.
Open toolTime Zone Converter
Convert a date and time between common time zones and see the selected UTC offsets. The tool also flags day changes and daylight-saving times that are invalid or ambiguous.
Open toolUnit Converter
Convert metric and imperial length, weight, temperature, and US volume units online. See the formula and equivalent values instantly without registration.
Open toolLength Converter
Convert meters, feet, inches, centimeters, kilometers, miles, and more. See the formula and equivalent values for dimensions, heights, and distances with no login.
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Free PDF & File Tools
Merge, split, extract, and create PDF files locally in your browser.
PDF Merger
Combine two or more PDF files into one document. Add files, set their order, merge the pages, and download the result in your browser without registration or login.
Open toolPDF Compressor
Try a browser-based rewrite to reduce a PDF's size, then compare original and output bytes before downloading. Text-heavy files may shrink; image-heavy files may not.
Open toolJPG to PDF Converter
Combine JPG or JPEG images in your chosen order and create one PDF. Preview the page order, download the finished document, and use it without registration or login.
Open toolImage to PDF Converter
Combine JPG, PNG, or WebP images in your chosen order and create one PDF. Preview the pages and download the result locally without registration or login.
Open toolPDF to JPG Converter
Convert all or selected PDF pages to JPG in your browser. Set page ranges and quality, preview the rendered pages, then download individual files or a ZIP without logging in.
Open toolPDF Splitter
Split one PDF into sequential files by choosing how many pages each part should contain. Review the output count and download all parts as a ZIP without login.
Open toolPDF Page Extractor
Select exact PDF pages or ranges, preview the number of pages in the new file, and download the extracted PDF in your browser without signing in.
Open toolCategory
Free Text Tools
Count, convert, preview, and compare text with instant local results.
Word Counter
Count words, characters, sentences, paragraphs, reading time, and speaking time as you type. Set a word goal and copy or clear your text with no login.
Open toolCharacter Counter
Count characters with or without spaces, words, lines, UTF-8 bytes, and emoji-related units. Set a custom character limit to see what remains or what exceeds it.
Open toolCase Converter
Convert text to uppercase, lowercase, Title Case, sentence case, camelCase, snake_case, and more. Paste text, choose a format, then copy or download the result with no login.
Open toolMarkdown Editor
Write or open Markdown and see a live preview as you edit. Copy or download the Markdown source or rendered HTML in your browser without registration or login.
Open toolText Diff Checker
Compare two text versions with word- or line-level additions and removals. Import local files, review the changes, and copy or download a TXT report without signing in.
Open toolCategory
Free Design Tools
Pick colors, check contrast, generate CSS, and optimize SVG assets in your browser.
Color Picker
Pick a color visually or enter a HEX value, then fine-tune RGB, HSL, and opacity. Preview the result, compare nearby tones, and copy the exact color code with no login.
Open toolColor Contrast Checker
Test text and background colors against WCAG 2.2 AA and AAA. See the exact contrast ratio, preview the selected font size and weight, and identify whether the pair passes.
Open toolCSS Gradient Generator
Build linear, radial, or conic gradients with two to six color stops. Preview the result live, adjust the relevant direction or origin, and copy ready-to-use CSS without signing in.
Open toolSVG Optimizer
Upload or paste SVG markup, optimize it locally with SVGO, and compare the code, file size, and visual result before downloading. No login or server upload required.
Open toolCSS Box Shadow Generator
Create layered CSS shadows with up to four editable layers. Adjust offsets, blur, spread, color, opacity, and inset mode, preview the result, and copy the CSS without login.
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