Free tools for everyday work
Format data, clean text, prepare website assets, and check business numbers with 50 focused tools from AIXpress. Each runs in your browser and includes an example, instructions, and copy or download actions.
50 tools available
Developer & data
JSON Formatter
Validate JSON and make API responses or configuration files readable with consistent indentation.
Open free tool →Developer & data
JSON Minifier
Remove unnecessary JSON whitespace while preserving the parsed values for compact payloads.
Open free tool →Developer & data
JSON to CSV Converter
Convert an array of JSON records into CSV with combined headers and spreadsheet-safe cells.
Open free tool →Developer & data
CSV to JSON Converter
Turn CSV with a header row into a JSON array while preserving text values and leading zeros.
Open free tool →Developer & data
CSV to TSV Converter
Convert quoted CSV into tab-separated text for spreadsheet and data-import workflows.
Open free tool →Developer & data
TSV to CSV Converter
Convert tab-separated data into quoted, spreadsheet-safe CSV without splitting embedded quoted line breaks.
Open free tool →Developer & data
Base64 Text Encoder
Encode Unicode text as UTF-8 Base64 for text payloads, configuration, or test fixtures.
Open free tool →Developer & data
Base64 Text Decoder
Decode Base64 into UTF-8 text and detect invalid padding or nontext binary bytes.
Open free tool →Developer & data
URL Encoder
Percent-encode a query value or whole URL, including spaces and Unicode characters.
Open free tool →Developer & data
URL Decoder
Decode percent-encoded UTF-8 text from query values or whole URLs.
Open free tool →Developer & data
HTML Entity Encoder
Escape HTML-sensitive characters so text can be represented as an HTML text fragment.
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HTML Entity Decoder
Decode numeric Unicode references and common named HTML entities into readable text.
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JWT Decoder
Inspect a JWT header and payload as JSON with an explicit reminder that decoding does not verify the signature.
Open free tool →Developer & data
UUID v4 Generator
Generate up to 100 UUID version 4 identifiers with secure browser randomness.
Open free tool →Developer & data
SHA-256 Text Hash Generator
Calculate the lowercase hexadecimal SHA-256 digest of exact UTF-8 text.
Open free tool →Developer & data
Unix Timestamp Converter
Convert Unix seconds or milliseconds to UTC, or convert a timezone-explicit ISO date into a Unix timestamp.
Open free tool →Developer & data
Number Base Converter
Convert whole numbers between bases 2 through 36 using exact integer arithmetic, including very large values.
Open free tool →Developer & data
Query String Parser
Parse URL query parameters into JSON, preserving repeated keys as arrays and decoding form-encoded values.
Open free tool →Developer & data
JSON Key Sorter
Sort object keys recursively for readable diffs while retaining array order and JSON values.
Open free tool →Developer & data
JSON to TypeScript Types
Infer a TypeScript type from JSON, retaining null values, array unions, and optional properties across differing records.
Open free tool →Text & writing
Word Counter
Count words, characters, lines, and paragraphs in a draft before publishing.
Open free tool →Text & writing
Case Converter
Convert text to uppercase, lowercase, title case, sentence case, or identifier casing.
Open free tool →Text & writing
Duplicate Line Remover
Remove repeated lines from a list while keeping the first occurrence and its order.
Open free tool →Text & writing
Line Sorter
Sort a newline list alphabetically or numerically in ascending or descending order.
Open free tool →Text & writing
Whitespace Cleaner
Trim stray spaces, collapse repeated spacing, and normalize pasted text.
Open free tool →Text & writing
Text Find and Replace
Replace every literal occurrence of a phrase without running regular expressions.
Open free tool →Text & writing
Text to Slug
Turn a title into a clean lowercase ASCII slug for a descriptive URL path.
Open free tool →Text & writing
Markdown Table Generator
Convert tab-separated rows with a header into a portable Markdown table.
Open free tool →Text & writing
Text Diff Checker
Compare two text versions and identify added, removed, and unchanged lines.
Open free tool →Text & writing
List to JSON
Convert a newline or comma-separated list into a valid JSON string array.
Open free tool →Text & writing
Text to HTML
Wrap plain text in escaped HTML paragraphs, line breaks, or a preformatted block.
Open free tool →Text & writing
Markdown Link Generator
Create a Markdown link with escaped label text and an HTTP or HTTPS destination.
Open free tool →Text & writing
Email List Cleaner
Deduplicate a pasted email list and separate addresses that fail basic syntax checks.
Open free tool →Text & writing
Line Numbering
Add a consecutive number to each line of text with a configurable starting number.
Open free tool →Text & writing
Word Frequency Counter
Find the most repeated words in a document with case-insensitive occurrence counts.
Open free tool →Web & SEO
UTM Link Builder
Add campaign source, medium, name, term, and content parameters to an existing URL.
Open free tool →Web & SEO
Meta Tag Generator
Generate escaped page title, description, canonical URL, and search indexing meta tags.
Open free tool →Web & SEO
Open Graph Tag Generator
Create Open Graph and Twitter card metadata for a shareable page and optional preview image.
Open free tool →Web & SEO
Robots.txt Generator
Generate a simple crawl policy with a sitemap and explicit access to public rendering assets.
Open free tool →Web & SEO
Sitemap XML Generator
Convert a list of public page URLs into escaped sitemap XML with optional last-modified dates.
Open free tool →Web & SEO
Redirect Rule Generator
Generate a literal-path redirect rule for Apache, Nginx, or a Netlify redirects file.
Open free tool →Web & SEO
Image Aspect Ratio Calculator
Reduce image dimensions to an aspect ratio and calculate a proportional resized height.
Open free tool →Web & SEO
CSS Gradient Generator
Generate a two-color CSS linear gradient with a configurable angle.
Open free tool →Web & SEO
CSS Clamp Calculator
Build a fluid CSS clamp value between two pixel sizes at defined viewport widths.
Open free tool →Web & SEO
Color Contrast Checker
Calculate WCAG text contrast for two opaque hex colors and check AA and AAA thresholds.
Open free tool →Business calculators
Profit Margin Calculator
Calculate profit and margin from revenue and the costs included in your calculation.
Open free tool →Business calculators
Markup Calculator
Measure the price increase over cost and compare markup with selling-price margin.
Open free tool →Business calculators
Discount Calculator
Calculate savings and the final price after a percentage discount.
Open free tool →Business calculators
Percentage Change Calculator
Calculate growth or decline from a positive starting value to a nonnegative new value.
Open free tool →Business calculators
Conversion Rate Calculator
Calculate the percentage of eligible visitors who converted during the same measurement period.
Open free tool →Continue your workflow
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