Free online JSON, CSV, text & developer tools
Format JSON, encode Base64, clean lists, convert CSV, shift SRT captions, and generate UUIDs. Every tool runs in your browser — your data never hits our servers.
Popular tools
Browse all 99 toolsCrazy Font Generator
Generate crazy fonts, fancy letters, and cool Unicode text styles.
Sentence Splitter
Separate paragraphs into distinct lines per sentence.
Remove Special Characters
Keep only plain letters, numbers, and space tags.
JSON Formatter
Format and indent JSON files.
Base64 Encode
Encode ASCII strings to Base64 hashes.
Character & Word Counter
Count characters, sentences, paragraphs, and read times.
Case Converter
Convert strings to UPPERCASE, lowercase, camelCase, snake_case, PascalCase.
UUID Generator
Generate random RFC 4122 v4 UUID keys.
JWT Decoder
Decode JSON Web Token scopes without secrets.
URL Encoder
Escape URL strings into percent codes.
CSV to JSON
Convert CSV files into structured JSON objects.
Inches to Pixels Converter
Convert physical inches dimensions to pixels via DPI.
Text Cleanup
Remove duplicates, empty lines, phone numbers, punctuation, and cleanup text formatting.
Remove Duplicate Lines
Instantly clean your lists and logs by stripping duplicate lines.
Remove Blank Lines
Strip all blank or empty spacing lines from document text sheets.
Remove Extra Spaces
Collapse irregular spaces down to single spaces.
Remove Tabs
Convert tabs into standard spaces or strip them entirely.
Remove Emojis
Strip emoji glyphs, flags, and pictographs from copy text.
Remove URLs
Clean link spam by removing http, https, and www references.
Remove Emails
Strip all email addresses from logs or datasets.
Remove Phone Numbers
Strip customer mobile and telephone numbers.
Remove HTML
Wipe markup tags from HTML text strings.
Remove Markdown
Convert raw Markdown text into readable plain text strings.
Remove Unicode
Strip non-ASCII characters to normalize text systems.
Remove Zero Width Spaces
Strip zero-width spaces (ZWSP) and BOM formatting markers.
Remove Punctuation
Strip commas, periods, brackets, and quotes from copy.
Remove Numbers
Erase all digit markers (0-9) from text.
Remove Special Characters
Keep only plain letters, numbers, and space tags.
Remove Accents
Convert European accented letters (é, ö, ñ) to plain versions.
Case Converter
Convert strings to UPPERCASE, lowercase, camelCase, snake_case, PascalCase.
Slug Generator
Convert header titles into clean, hyphenated SEO URL links.
Character & Word Counter
Count characters, sentences, paragraphs, and read times.
Whitespace Cleaner
Trim leading, trailing, and extra blank rows.
Remove Empty Paragraphs
Collapse multiple carriage returns in paragraphs.
Remove Duplicate Words
Wipe redundant consecutive duplicate words from copy.
Find Duplicate Lines
Filter text to show only recurring list lines.
Alphabetize Lines
Sort list lines alphabetically from A to Z or Z to A.
Reverse Lines
Flip list rows upside down starting from the bottom line.
Shuffle Lines
Randomize line orders in lists.
Random Line Picker
Extract a single random line from lists.
Sentence Splitter
Separate paragraphs into distinct lines per sentence.
Join Lines
Merge separate rows into a single line using separators.
Extract URLs
Scan text blocks and pull list references of links.
Extract Emails
Pull all unique email accounts from log lists.
Extract Numbers
Scan text strings and extract integer digit blocks.
Extract Hashtags
Pull all unique Twitter/Instagram hash markers.
Extract Mentions
Pull user profile handles starting with @.
Extract IP Addresses
Scan server logs and pull IPv4 connection codes.
Crazy Font Generator
Generate crazy fonts, fancy letters, and cool Unicode text styles.
CSV & Data
Format, filter, sort, split, merge, and convert CSV and data tables.
CSV Duplicate Remover
Remove redundant duplicate rows in CSV databases.
CSV Column Remover
Delete selected columns from CSV files by index.
CSV Row Filter
Filter out CSV records matching query strings.
CSV Sorter
Sort database row values alphabetically by key column.
CSV Cleaner
Trim fields and clean formatting gaps in datasets.
CSV Header Editor
Modify column headers on row 0 of CSV files.
CSV to JSON
Convert CSV files into structured JSON objects.
JSON to CSV
Convert JSON object arrays to clean CSV spreadsheets.
CSV Validator
Validate column uniformity and catch cell length mismatches.
CSV Column Extractor
Extract specific columns from tabular records.
CSV Empty Row Remover
Filter out blank or empty records from datasets.
JSON, XML & HTML
Validate, beautify, minify, escape, and parse code formats.
JSON Formatter
Format and indent JSON files.
JSON Validator
Verify syntax errors in JSON objects.
JSON Beautifier
Structure JSON listings into readable files.
JSON Minifier
Compress JSON configurations by stripping whitespaces.
JSON Sorter
Sort JSON object keys alphabetically.
JSON Escape
Escape special chars in JSON strings.
JSON Unescape
Unescape code blocks from escaped JSON values.
XML Formatter
Format and indent XML codes.
XML Minifier
Compress XML files by stripping space indents.
XML Escape
Escape XML values to avoid syntax errors.
XML Unescape
Convert XML entities back to readable tags.
HTML Encoder
Encode special HTML characters to prevent XSS.
HTML Decoder
Decode HTML entities back to markup tags.
HTML Minifier
Compress HTML codes by removing empty spacing rows.
HTML Beautifier
Format and align layout nodes.
HTML to Text
Wipe tags to extract plain text contents.
Text to HTML
Convert text formatting lines into HTML paragraphs.
URL & Encoders
Base64, hex, binary, and URL encoders/decoders and query parsers.
URL Encoder
Escape URL strings into percent codes.
URL Decoder
Restore percent coded URLs back to readable tags.
URL Parser
Deconstruct absolute URLs into host, path, queries.
URL Cleaner
Remove unwanted query trackers from URLs.
UTM Builder
Add UTM campaign parameters to marketing URLs.
UTM Cleaner
Wipe active UTM trackers from copied link strings.
Domain Extractor
Parse host domain names from URL listings.
Subdomain Extractor
Extract subdomains from canonical URLs.
Base64 Encode
Encode ASCII strings to Base64 hashes.
Base64 Decode
Restore Base64 hashes back to readable strings.
Hex Encoder
Convert readable text strings to hexadecimal digits.
Hex Decoder
Convert hexadecimal digits back to readable text.
ASCII Converter
Convert characters to ASCII codes and vice versa.
Unicode Converter
Translate string values into escaped Unicode notation.
ROT13 Encoder/Decoder
Encode or decode strings using ROT13 cipher shifts.
Morse Code Converter
Translate text to Morse code and Morse to text.
Subtitles & Files
Shift SRT timecodes, clean subtitle formats, and sanitize filenames.
SRT Time Shifter
Offset subtitle SRT timestamps in milliseconds.
SRT Cleaner
Strip HTML and format tags from SRT subtitle files.
SRT to VTT Converter
Convert SRT subtitles to WebVTT formats.
VTT to SRT Converter
Convert WebVTT subtitles back to SRT format files.
Filename Cleaner
Remove spacing issues and symbols from filenames.
Filename Sanitizer
Replace invalid OS path characters from file names.
File Extension Extractor
Extract file extensions from paths list.
Calculations & Colors
Aspect ratios, pixel scales, and custom color conversion builders.
Aspect Ratio Calculator
Find video/image proportions and target widths.
Pixels to Inches Converter
Convert pixel values to printing inches sizes based on DPI.
Inches to Pixels Converter
Convert physical inches dimensions to pixels via DPI.
DPI Calculator
Find display DPI based on pixel and inch values.
HEX to RGB Converter
Convert HEX colors to standard RGB values.
RGB to HEX Converter
Convert RGB colors to hexadecimal representation.
Developer Tools
JWT decoders, regex testers, cron interpreters, and UUID generators.
UUID Generator
Generate random RFC 4122 v4 UUID keys.
Hash Generator
Generate SHA-256 strings from text inputs.
Lorem Ipsum Generator
Generate random mock layout text paragraphs.
JWT Decoder
Decode JSON Web Token scopes without secrets.
Cron Expression Parser
Translate Crontab configurations to readable schedules.
Unix Timestamp Converter
Convert Unix epoch times into human readable dates.
Why these tools stay in your browser
No upload, no account
JSON, CSV, JWTs, and lists are processed with JavaScript in the page. We do not receive a copy of your input.
Results as you type
There is no round-trip to a formatter API. Output updates locally so large pastes do not wait on a queue.
Free for commercial use
Copy JSON, UUIDs, converted CSV, and cleaned text into products and client work. No watermarks.
Frequently asked questions
Are Answer to Geek tools free?
Yes. All 99 utilities are free to use with no account. Outputs are yours to use in personal or commercial work.
Is my JSON, CSV, or JWT uploaded?
No. Each tool runs in your browser with JavaScript. We do not receive the text, tables, or tokens you paste.
How do I format JSON online without sending it to a server?
Open the JSON Formatter, paste the payload, and copy the indented result. Parsing happens locally in the tab.
Do I need to install anything?
No. Use a current browser. After a page loads, many tools still work if you go offline because processing is client-side.