CSV / JSON Converter
Convert CSV tables and flat JSON object arrays.
Open toolSLR TECH / A LITTLE LESS BUSYWORKYour everyday
Your everyday
toolkit. Simplified.
Format, compare, convert, and calculate. Find a focused tool for the task in front of you, right in your browser.
38 useful toolsNo registrationNo installation
1 / 3
JSON Formatter
Format and pretty-print JSON with 2-space indent.
Open toolJSON Compare
Spot JSON differences line-by-line with highlights.
Open toolJSON Validator
Validate JSON syntax with clear error messages.
Open toolJSON to TypeScript
Infer TypeScript types from a JSON example in your browser.
Open toolXML Formatter
Beautify XML with proper indentation instantly.
Open toolXML Compare
Compare two XML blocks side-by-side with diff.
Open toolXML Validator
Check XML well-formedness and catch syntax errors.
Open toolLine Sorter & Deduplicator
Sort text lines and remove exact duplicates.
Open toolText Compare
Find changes between two text blocks visually.
Open toolCase Converter
Convert text to UPPER, lower, or Title Case.
Open toolWhitespace Cleaner
Remove extra spaces and normalize whitespace.
Open toolText Cleanup
Remove selected boilerplate phrases and invisible characters.
Open toolWord Counter
Count words, characters, lines and sentences.
Open toolURL Encoder / Decoder
Encode or decode URLs and query strings.
Open toolBase64 Encoder / Decoder
Encode or decode Base64 strings.
Open toolText Slug Generator
Create readable URL slugs from headings and Unicode text.
Open toolUUID Generator
Generate up to 100 random version 4 UUIDs.
Open toolSHA-256 Text Hash
Calculate a SHA-256 digest of UTF-8 text locally.
Open toolTech Calculator
Fast calculator with common operators.
Open toolRandom Password Generator
Generate passwords with a secure browser random source.
Open toolLength Converter
Convert length units quickly and accurately.
Open toolColor Converter
Convert between HEX, RGB, and HSL color formats.
Open toolHTML Entity Encoder
Encode or decode HTML entities safely.
Open toolJWT Decoder
Inspect JWT headers and payloads locally; signatures are not verified.
Open toolURL Query Inspector
Parse, edit, and build URL query parameters, including repeated keys.
Open toolData Size Converter
Convert byte quantities using decimal SI or binary IEC units.
Open toolDNS Lookup
Look up public DNS records using the SLR CORE API.
Open tool24h Timezone Converter
Convert times for India, Australia, Philippines, UK and major US cities with daylight-saving rules.
Open toolDate Difference Calculator
Get date difference in days, hours, and seconds.
Open toolAge Calculator
Calculate exact age from date of birth.
Open toolUnix Timestamp Converter
Convert Unix timestamps to readable dates.
Open toolDuration Calculator
Add HH:MM:SS durations and see the total time.
Open toolPercentage Calculator
Calculate percentages, increases, and decreases.
Open toolNumber Base Converter
Convert between decimal, binary, hex and octal.
Open toolStatistics Calculator
Get mean, median, mode, and standard deviation.
Open toolTemperature Converter
Convert Celsius, Fahrenheit, and Kelvin temperatures.
Open toolAspect Ratio Calculator
Reduce image ratios and resize while preserving proportions.
Open toolPRACTICAL BY DESIGNChoose a tool.
Choose a tool.
Understand its limits.
A formatter makes data easier to read. A syntax validator checks structure. Neither can tell you whether a value is correct for your application.
Explore the SLR CORE guides ↗Start with sample data
Remove secrets and personal records before pasting. Keep a copy of your original file.
Check the result
Each tool includes instructions, an example, and notes about what it does—and what it does not check.
Keep the context
Units, encodings, date zones, and precision matter. Match the settings to your source.
Tell us what’s missing
Send a tool suggestion or a reproducible, non-sensitive example.
Before you get started.
Are the tools free to use?
Yes. These browser utilities are available without registration. Each page explains its supported inputs and output.
Where does the processing happen?
Most tools process input locally in browser JavaScript. DNS Lookup sends the selected domain and record type to our API when you request a lookup. This site also uses hosting and advertising services, which have their own technical data handling. See the privacy policy and avoid pasting confidential information into public web tools.
Can a validator check my API or business rules?
JSON validation checks syntax; the XML validator checks well-formedness. A schema or receiving application may require additional fields, types, or constraints. Those checks are separate.
Who maintains SLR TECH Tools?
The tools are part of SLR CORE, founded by Lakshmisha GR in Karnataka, India. Learn about the project or report a problem.