BoltQuickTools

Free online tools that get the job done fast. No sign-up, no bloat, no nonsense.

Tools

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CSV Viewer

View, sort, and filter CSV files in your browser. Export to JSON or clean CSV.

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JSON Diff

Compare two JSON documents and see added, removed, and changed keys.

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CSS Unit Converter

Convert px, rem, em, pt, in, cm, and mm with a custom root font size.

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Line Sorter and Deduplicator

Sort lines A-Z, naturally, by length, or shuffled. Dedupe, trim, prefix.

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HTML Tag Stripper

Strip HTML tags and get clean plain text. Keep chosen tags if you want.

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Roman Numeral Converter

Convert numbers to Roman numerals and back, with validation. 1 to 3999.

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IPv6 Subnet Calculator

Expand, compress, and subnet IPv6 addresses with full 128-bit math.

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DNS Lookup

Query A, AAAA, MX, TXT, NS, CAA records via Cloudflare 1.1.1.1 DoH.

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Bcrypt Hash Generator

Generate and verify bcrypt password hashes. Configurable cost factor.

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JWT Generator

Build signed JWTs with HS256/384/512 entirely in your browser.

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GraphQL Formatter

Format, beautify, or minify GraphQL queries and mutations.

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Text Tools: Sort, Dedupe, Reverse

Quick line operations: sort, remove duplicates, reverse, shuffle, count.

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CSS Clip-Path Generator

Visual editor for polygon, circle, ellipse, and inset clip paths.

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Markdown TOC Generator

Auto-generate TOC from H1-H6 headings with GitHub-style anchors.

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LLM Token Counter

Estimate tokens and API cost for GPT, Claude, Gemini, and Llama. 2026 pricing.

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Color Blindness Simulator

See how your designs look to viewers with protanopia, deuteranopia, tritanopia, and achromatopsia.

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Cubic Bezier Editor

Visual CSS timing function editor with live animation preview. Drag handles, copy CSS.

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TOTP / 2FA Generator

Generate secrets, scan with any authenticator app, verify 6-digit codes. RFC 6238.

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JSONPath Tester

Live JSONPath expression evaluation. Filters, slices, recursive descent.

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Cron Expression Visualizer

See the next 10 runs of any cron schedule with human-readable explanation.

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Date Difference Calculator

Days, weeks, months, working days between any two dates with optional times.

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Timezone Converter

Convert between IANA time zones with proper DST handling. Side-by-side comparison.

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UUID and NanoID Generator

UUID v1/v4/v6/v7 plus NanoID with custom alphabets. Bulk generation.

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QR Code Generator

Generate QR codes for URLs, text, WiFi, and more. Download as PNG or SVG.

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Image Compressor

Compress PNG, JPG, and WebP images right in your browser. No upload needed.

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JSON Formatter & Validator

Format, beautify, minify and validate JSON data instantly.

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Color Picker & Converter

Pick colors, convert HEX/RGB/HSL/CMYK, generate palettes, check WCAG contrast.

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Base64 Encoder & Decoder

Encode/decode text and files to Base64. Copy as data URI.

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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes for text and files.

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Regex Tester

Test regex patterns with real-time highlighting and capture groups.

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JWT Decoder

Decode JSON Web Tokens. View header, payload, claims, and expiration.

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HMAC Generator

Generate HMAC signatures with SHA-1, SHA-256, SHA-384, and SHA-512. Hex and Base64 output.

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Basic Auth Header Generator

Generate and decode HTTP Basic Authorization headers from username and password.

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PDF Tools

Merge, split, reorder and extract PDF pages. All processing happens locally.

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Text Diff Checker

Compare two texts side by side with line-level and word-level highlighting.

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UUID Generator

Generate UUID v4, v7, ULID, and Nano IDs. Bulk generation with one click.

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Password Generator

Generate strong, secure passwords with customizable length and character sets.

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Markdown Editor

Write Markdown with live preview. Toolbar, word count, and HTML export.

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Image Format Converter

Convert images between PNG, JPEG, WebP, BMP, GIF, and ICO formats.

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Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.

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Word Counter

Count words, characters, sentences, paragraphs. Keyword density analysis.

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URL Encoder & Decoder

Encode and decode URLs, query strings, and parse URL parameters.

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Slug Generator

Convert titles and text into clean SEO-friendly URL slugs with custom separator and cleanup options.

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Lorem Ipsum Generator

Generate placeholder text in multiple styles. Classic, Hipster, Tech and more.

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Timestamp Converter

Convert Unix timestamps to human-readable dates and back. Live clock, relative time.

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JSON/CSV Converter

Convert between JSON and CSV formats. Handles nested objects, custom delimiters.

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CSS Gradient Generator

Build linear, radial, and conic CSS gradients visually. Copy ready-to-use code.

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Cron Expression Parser

Parse, explain, and build cron expressions. See next 10 scheduled run times.

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Number Base Converter

Convert between binary, octal, decimal, hex, and any base 2-36. BigInt support.

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IPv4 Subnet Calculator

Calculate CIDR ranges, subnet mask, wildcard mask, broadcast, and usable host range instantly.

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MIME Types Lookup

Search MIME types by extension or media type and copy ready-to-use Content-Type headers.

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HTML Entity Encoder

Encode and decode HTML entities. Named, decimal, and hex formats with reference table.

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Meta Tag Generator

Generate SEO meta tags with Google and social media card previews.

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SQL Formatter

Format, beautify, and minify SQL queries with syntax highlighting.

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Aspect Ratio Calculator

Calculate aspect ratios, scale dimensions, and compute PPI/DPI.

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Favicon Generator

Generate all favicon sizes from one image. Download PNGs and HTML link tags.

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Binary/Text Converter

Convert text to binary and back. ASCII and UTF-8 modes with character breakdown table.

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Morse Code Translator

Translate text to Morse code and back. Audio playback, visual flash mode, and reference chart.

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ROT13 / Caesar Cipher

Encode and decode with ROT13, ROT47, or custom Caesar cipher. Brute force all 25 shifts.

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Unicode Converter

Convert text to Unicode code points, JS/HTML/CSS/Python escapes, UTF-8 and UTF-16 hex.

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Hex Editor / Viewer

View and edit data as hex dump with ASCII sidebar. Upload files, search, and export.

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JSON / XML Converter

Convert between JSON and XML formats with pretty-printing, validation, and attribute support.

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JSON / YAML Converter

Convert between JSON and YAML for DevOps configs. Supports nested objects, arrays, and multiline strings.

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HTML / Markdown Converter

Convert HTML to Markdown and back. Supports tables, code blocks, lists, and live preview.

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GZIP Compress / Decompress

Compress and decompress data with GZIP. Shows compression ratio, file sizes, and savings.

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API Request Tester

Test REST APIs from your browser. Custom headers, auth, body, and response viewer with history.

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HTTP Status Codes Lookup

Search HTTP response codes by number or name. Includes category, meaning, and practical API usage notes.

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User-Agent Parser

Parse browser, OS, engine, device type, and bot signatures from User-Agent strings.

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SSL Certificate Decoder

Decode PEM certificates. View subject, issuer, SANs, expiration, fingerprints, and chain.

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XML Formatter

Format, beautify, minify, and validate XML. Syntax highlighting and collapsible tree view.

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SVG to PNG/JPG Converter

Convert SVG to PNG or JPG with custom dimensions, quality, and batch export with ZIP download.

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ASCII Art Generator

Convert text to ASCII art with multiple font styles. Banner, Block, Slant, Standard, and more.

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TOML / INI Converter

Parse and convert between TOML, INI, and JSON formats. Validate config files instantly.

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Image Resizer

Resize images by exact pixels, percentage, or social media presets. Batch support with ZIP download.

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CSS Minifier / Beautifier

Minify CSS to reduce file size or beautify it with proper indentation. Syntax highlighting included.

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JS Minifier / Beautifier

Minify or beautify JavaScript code. Handles comments, strings, template literals, and regex.

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HTML Beautifier / Minifier

Format HTML with proper indentation or minify it for production. Preserves pre and script blocks.

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Box Shadow Generator

Visual CSS box-shadow builder with multiple layers, presets, color picker, and live preview.

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Color Palette Generator

Generate harmonious color palettes. Analogous, complementary, triadic, and more. WCAG contrast check.

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Chmod Calculator

Unix file permissions calculator. Interactive grid, numeric and symbolic modes, common presets.

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Markdown Table Generator

Visual table editor that outputs Markdown. Import CSV, set alignment, export as HTML or Markdown.

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JSON Schema Validator

Validate JSON data against a JSON Schema. Detailed error messages with paths. Draft 7 support.

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Image to Base64

Convert images to Base64 data URIs or decode Base64 back to images. Multiple output formats.

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Background Remover

Remove image backgrounds with color picking and tolerance control. Download transparent PNGs.

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Image to Text (OCR)

Extract text from images using OCR. Supports 10+ languages with confidence scoring.

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JSON to TypeScript

Convert JSON data to TypeScript interfaces and types. Handles nested objects and arrays.

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Code Screenshot

Generate beautiful code screenshots with syntax highlighting, themes, and gradient backgrounds.

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Color Contrast Checker

Check WCAG 2.1 color contrast compliance. AA/AAA ratings for text and UI components.

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HTML to JSX Converter

Convert HTML to valid React JSX. Handles className, style objects, event handlers, and more.

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cURL to Code

Convert cURL commands to JavaScript, Python, PHP, Go, Ruby, Java, and C# code.

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CSS Layout Generator

Visual Flexbox and CSS Grid layout builder with live preview, presets, and code export.

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Image Upscaler

Upscale images 2x-4x with bilinear, bicubic, and Lanczos interpolation. Sharpen and compare.

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Robots.txt Generator

Generate robots.txt and .htaccess files visually. Block AI crawlers, set redirects, and more.

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Code Diff Viewer

Compare code with syntax highlighting, character-level diffs, and side-by-side or unified views.

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OG Social Card Preview

Preview how links appear on Facebook, Twitter, LinkedIn, Discord, Slack, and Google.

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EXIF Viewer & Stripper

View photo metadata including GPS location, camera info. Strip EXIF data for privacy.

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SSH Key Generator

Generate RSA and ECDSA key pairs in your browser. OpenSSH and PEM format output.

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JSON Schema to Code

Generate TypeScript, Python, Go, Rust, Java, and C# code from JSON Schema definitions.

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🎯

R6 Random Operator Picker

Fair-pick randomizer for Rainbow Six Siege Attackers and Defenders. Session counters, keyboard shortcuts, offline.

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R6 Strat Roulette

Random strat picker for Rainbow Six Siege. Pick side, team size, and style. Add your own custom strats.

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Overwatch Hero Randomizer

Fair-pick randomizer for Overwatch 2 Tank, DPS, and Support heroes. Session counters and keyboard shortcuts.

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Apex Legends Randomizer

Random legend picker across Assault, Skirmisher, Recon, Controller, and Support classes. Fair rotation counter.

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Marvel Rivals Randomizer

Random hero picker for Marvel Rivals. Vanguard, Duelist, and Strategist roles with session stats.

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LoL Champion Randomizer

Random League of Legends champion by lane: Top, Jungle, Mid, Bot, Support. Fair-pick tracking offline.

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Valorant Agent Randomizer

Pick a random Valorant agent by role: Duelist, Initiator, Controller, Sentinel. Fair rotation and stats.

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Dota 2 Hero Randomizer

Random Dota 2 hero picker by attribute: Strength, Agility, Intelligence, Universal. All 126 heroes.

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Deep Rock Galactic Loadout

Random class and weapon combo for Driller, Engineer, Gunner, and Scout. Rock and Stone!

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Fortnite Drop Location Picker

Random POI for Fortnite Chapter 6. Pick hot, medium, or quiet drops. Add your own spots.

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Warzone Drop Picker

Random landing spot for Call of Duty Warzone. Verdansk, Urzikstan, Rebirth Island, Fortune’s Keep.

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PUBG Drop Picker

Random drop location across PUBG maps: Erangel, Miramar, Sanhok, Taego, Vikendi, Deston, Rondo.

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CS2 Weapon Randomizer

Random Counter-Strike 2 weapon picker: pistols, SMGs, rifles, snipers, heavy. Perfect for weapon challenges.

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CS2 Strat Roulette

Random CS2 strat for T or CT side. Team size filter, comp and meme strats, add your own.

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Valorant Strat Roulette

Random Valorant strat for Attack or Defense. Team size, comp or meme, custom strat pool.

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Elden Ring Build Generator

Random Elden Ring build: class, weapon, ash of war, armor, talisman, spell. Toggle DLC content.

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Helldivers 2 Loadout Randomizer

Random Helldivers 2 loadout: primary, secondary, grenade, and 4 stratagems. Democracy intensifies.

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CSS Specificity Calculator

Calculate ID, class, and element specificity for CSS selectors.

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CSS Variable Extractor

Extract CSS custom properties from a stylesheet into a clean variable list.

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Markdown Link Checker

Scan Markdown and list links by external, root-relative, or relative type.

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URL Query String Builder

Build encoded URL query strings from simple key value pairs.

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Regex Escape Tool

Escape text so it can be used safely as a literal regex pattern.

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HTML Attribute Extractor

Extract element names and attributes from pasted HTML snippets.

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