$free browser-based tools for developers and creators

The fastest way to

10 essential tools that run entirely in your browser. No uploads, no sign-ups, no limits. Just paste, drop, or type and get results instantly.

100% FreeNo Sign-upClient-Side OnlyNo Limits
0
Developer Tools
0M+
Monthly Searches
Zero
Files Uploaded to Servers
0%
Client-Side Processing
TOOLS

Everything you need, one place

From formatting JSON to compressing images, every tool is built for speed, privacy, and simplicity.

{ }
PHASE 1

JSON Formatter

Format, validate, beautify & minify JSON with tree view and conversion tools.

FormatValidateTree ViewJSON→CSV
475K+ monthly searches
B64
PHASE 1

Base64 Encoder

Encode & decode text and files to Base64. Image preview. URL-safe option.

EncodeDecodeImage→Base64
110K+ monthly searches
/.*/
PHASE 1

Regex Tester

Real-time regex matching with highlighting, explanation panel & pattern library.

MatchHighlightExplainFlags
200K+ monthly searches
IMG
PHASE 2

Image Compressor

Compress JPG, PNG, WebP with quality slider. Batch processing. Client-side.

CompressBatchBefore/After
200K+ monthly searches
PHASE 2

Image Converter

Convert between JPG, PNG, WebP, GIF, BMP, HEIC. Batch conversion supported.

HEIC→JPGPNG→WebPBatch
300K+ monthly searches
PHASE 2

Color Picker

Visual picker, HEX/RGB/HSL conversion, palette from image, gradient CSS generator.

HEXRGBPaletteWCAG
300K+ monthly searches
PDF
PHASE 3

PDF Tools Suite

Merge, split, compress, rotate PDFs. Image↔PDF conversion. All client-side.

MergeSplitCompressConvert
400K+ monthly searches
Aa
PHASE 3

Word Counter

Live word, character, sentence count. Reading time. Keyword density. Readability score.

WordsCharactersReadability
200K+ monthly searches
QR
PHASE 3

QR Code Generator

Generate QR codes for URLs, WiFi, vCard. Custom colors, logo embed, PNG/SVG export.

URLWiFiLogoSVG
500K+ monthly searches
</>
PHASE 4

CSS/JS Formatter

Beautify & minify CSS, HTML, JavaScript. Syntax highlighting. Side-by-side view.

BeautifyMinifyCSSJS
60K+ monthly searches
WHY NEBULATOOL

Built different. On purpose.

Most tool sites were built a decade ago. We rebuilt everything from scratch with modern tech and developer-first principles.

100% Client-Side

Every tool runs entirely in your browser. Your files and data never leave your device.

🔒

Privacy First

Zero server uploads. Zero tracking of your data. Process sensitive files with confidence.

🚀

Blazing Fast

Optimized for speed with static generation. Near-instant page loads on any connection.

🌙

Dark Mode Native

Designed for developers who live in dark mode. Easy on the eyes during late-night sessions.

📱

Mobile Ready

Every tool works on mobile and tablet. Process files on the go from any device.

♾️

No Limits

No daily caps. No file size warnings. No forced sign-ups. Just tools that work, always.

COMPARISON

How we stack up

FeatureNebulaToolOthers
Client-side processing
No file uploads to server
Modern, fast UI
Dark mode
Mobile responsivePartial
No account requiredPartial
Free with no limits
No usage limits
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