Zeugly

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95+ Free Privacy-First Utilities • 100% Client-Side

Free, Simple & Private Online Tools

Format JSON, decode JWTs, build screenshot mockups, resize images, edit text, and scan QR codes. Zero server uploads — processed 100% inside your browser.

Explore All Categories Scan QR Code Instantly

95+

Utility Modules

100%

Browser Execution

Free

No Accounts

Private

Zero Server Logs

QR & Barcode Suite

Scanning, custom creation, and bulk QR & barcode workflows

4 Tools

QR Code Inspector

Scan & inspect QR codes with safety risk analysis

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QR Code Generator

Generate customized vector QR codes

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Bulk QR Generator

Generate batch QR codes and export to ZIP archive

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Barcode Generator

Create Code 128, Code 39 & EAN-13 barcodes

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Design & Image Studio

Screenshot studio, format conversion, resize, crop & watermarks

30 Tools

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App Screenshot Studio

Build mockup graphics for App Store & Play Store

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Open Graph Image Generator

Design 1200x630 Open Graph preview cards for social media

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Image Resizer Studio

Resize image dimensions & compress quality

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Image Cropper & Rotator

Crop images with aspect ratio presets

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Image Format Converter

Batch convert PNG, JPG, WebP, BMP, ICO, TIFF & more

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Convert to WebP

Convert any image to Google WebP for faster web pages

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Convert to PNG

Convert any image to lossless PNG with transparency

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Convert to JPG

Convert images to JPG/JPEG with quality control

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Convert to GIF

Convert images to GIF format with transparency support

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Convert to BMP

Convert images to Windows BMP bitmap format

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Convert to ICO Favicon

Create multi-size ICO favicons from any image

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Convert to TIFF

Convert images to professional lossless TIFF format

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Convert to TGA

Convert images to TGA Targa for game dev & VFX pipelines

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Convert to SVG

Convert raster images to scalable SVG vector format

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Convert to EPS

Convert images to EPS PostScript for professional print

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Convert to HDR/EXR

Convert images to Radiance HDR high dynamic range format

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Convert to WBMP

Convert images to WBMP wireless bitmap 1-bit monochrome

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Image Watermark Tool

Add text & logo watermarks to images

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Image Color Picker

Sample colors with magnifying lens

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SVG Vectorizer

Convert PNG/JPG raster logos into SVG vectors

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SVG Optimizer

Minify SVG files & remove metadata

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SVG to PNG / JPG Converter

Export vector SVGs to high-res raster images

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Image File Size Compressor

Compress JPG, PNG & WebP file sizes client-side

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Image Rotator & Mirror Flipper

Rotate photos 90/180 or flip mirror horizontally & vertically

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EXIF & Location Metadata Cleaner

Scrub hidden GPS location data & EXIF camera headers

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Image Color Filters & Photo Effects

Apply brightness, contrast, grayscale & sepia filters

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Blur Image

Blur photos & censor sensitive regions for privacy

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Pixelate Image

Censor details with retro block pixelation

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Image to Base64

Convert images to Base64 Data URIs & HTML snippets

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Accessible Color Checker

Check WCAG 2.1 AA/AAA text color contrast ratios

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Text & Document Tools

Online text editing, markdown previews, case conversion & passwords

21 Tools

Online Text Editor

Rich text editor with live word count metrics

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Text Diff Viewer

Compare text side-by-side with diff highlights

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Text Case Converter

Convert text to UPPERCASE, camelCase, snake_case

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Secure Password Generator

Generate strong random passwords & API tokens

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Lorem Ipsum Generator

Create placeholder text paragraphs for designs

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Markdown Previewer

Write Markdown with real-time HTML preview

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CSV Viewer

View, filter & search CSV spreadsheet tables

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CSV Merger

Combine multiple CSV files into one dataset

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CSV Sorter

Sort CSV rows by column header (A-Z, 0-9)

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CSV Splitter

Split large CSV files by row count into ZIP archive

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CSV Deduplicator

Remove duplicate rows & unique column fields

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Word Counter

Count words, sentences & estimated reading time

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Character Counter

Count characters with/without spaces & byte sizes

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Line Counter

Count total, non-empty & blank lines in text or code

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Reading Time Estimator

Calculate silent reading vs spoken presentation time

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Sort Lines

Sort lines alphabetically (A-Z) or by line length

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Reverse Text

Reverse characters, word order, or line sequence

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Shuffle Lines

Randomize list line order with WebCrypto Fisher-Yates

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Remove Duplicate Lines

Deduplicate lines while preserving original sequence

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Remove Empty Lines

Strip blank and whitespace-only lines from text

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Slug Generator

Convert headlines and titles into SEO URL slugs

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PDF Documents Suite

Convert images to PDF, merge documents & split pages

14 Tools

PDF Tools & Converter

Convert images to PDF and merge files

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PDF Splitter & Extractor

Extract page ranges & split PDF documents

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PDF Compress

Compress & shrink PDF file size offline

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PDF Rotate

Rotate individual or all pages of a PDF

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PDF Organize

Reorder, arrange & delete PDF pages

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PDF Crop

Crop margins and whitespace from PDF pages

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PDF to Grayscale

Convert color PDFs to black & white or grayscale

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PDF Metadata Viewer

Inspect hidden document tags, title & author

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PDF Metadata Editor

Edit title, author, subject & keywords in PDF

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PDF Metadata Remover

Wipe personal metadata & author tags for privacy

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PDF Page Counter

Count total pages & dimensions across PDF files

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PDF Thumbnail Viewer

View page thumbnails & download PNG graphics or ZIP

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PDF Watermark

Stamp custom confidential or copyright text watermarks

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PDF OCR Text Extractor

In-browser WebAssembly OCR text recognition

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Developer Utilities

Inspect JSON, decode JWT, escape URLs, convert formats & hashes

26 Tools

JSON Formatter & Inspector

Prettify, format, validate and minify JSON

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JWT Decoder & Inspector

Decode header, payload & claims offline

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Base64 Encoder / Decoder

Encode/decode text strings & file assets

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URL Encoder / Decoder

Escape special URL query parameters safely

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CSV ↔ JSON Converter

Convert spreadsheets CSV to JSON records

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XML ↔ JSON Converter

Transform XML payloads to JSON objects

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UUID / GUID Generator

Generate bulk v4 RFC 4122 random UUIDs

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Hash & Checksum Generator

Calculate SHA-256, SHA-512 & SHA-1 hashes

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Cron Schedule Descriptor

Human-readable crontab expression explanations

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Timestamp Converter

Convert Unix epoch timestamps to calendar dates

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Keycode Event Finder

Inspect JavaScript keyboard event key/code values

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HTML Entity Coder

Encode/decode special HTML entity characters

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Git Branch & Commit Generator

Format ticket names into git branch titles

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Color & Unit Converter

HEX, RGB, HSL & px/rem unit converter

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JSON ↔ YAML Converter

Bi-directional JSON to YAML & YAML to JSON conversion

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JSON Diff Checker

Compare JSON objects side-by-side with diff highlights

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JSON Minifier

Minify and compact JSON payload strings

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Regex Tester

Live regular expression pattern match debugger

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HTTP Status Codes

Searchable 1xx-5xx HTTP status code reference lookup

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MIME Type Lookup

Search file extensions and Content-Type headers

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CSS Formatter & Minifier

Beautify or minify CSS stylesheets offline

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SQL Formatter

Format, indent & uppercase SQL query clauses

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YAML Formatter

Validate and format YAML configurations

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Diceware Password Generator

Generate memorable word-based passphrases with WebCrypto

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HMAC Generator

Compute HMAC-SHA256, HMAC-SHA512 & HMAC-SHA1 signatures

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File Checksum Calculator

Calculate SHA-256 & SHA-512 hashes of uploaded files

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Browse all 95+ tools →

Why it matters

Privacy is not a feature. It's the architecture.

Every tool on Zeugly processes data 100% inside your browser. Nothing is sent to a remote server, logged, or stored.

0 KB

Data Uploaded

100%

Client-Side Engine

0

Tracking Cookies

Offline

PWA Ready

Traditional Cloud ToolsServer Dependent

Your File → Internet → Remote Cloud Server → Output

Files are uploaded to remote servers, written to logs, and subjected to cloud retention policies.

Zeugly Engine100% Private

Your File → Local Browser RAM → Instant Output

Zero network transfers. Processing uses native Web APIs (Canvas, WebCrypto, FileReader).

No uploads.

Your files, images, and text never leave your device. Processing happens locally via browser APIs.

Canvas APIWebCrypto

No tracking.

We don't fingerprint your browser, profile usage patterns, or sell data. Tools run clean with 0 cookies.

0 CookiesNo Telemetry

No accounts.

No sign-up walls, email requests, or artificial rate limits. Open the tool, complete your task, and close the tab.

No Sign-upUnlimited

100% Auditable.

Inspect network requests via browser DevTools (F12). Disconnect Wi-Fi to confirm offline capability.

DevTools ProvenOffline PWA

Knowledge Base

Frequently Asked Questions

Learn how client-side privacy, WebAssembly decoders, and browser tools protect your data.

What is Zeugly?

Zeugly is a free, privacy-first web utility toolkit and developer sandbox. It offers over 95+ browser-based tools to format JSON, decode JWTs, resize images, generate OG preview cards, create secure passwords, convert timestamps, analyze cron expressions, minify SVGs, and inspect QR codes safely. Every action runs 100% client-side in your local browser.

Do I need an account or subscription to use the tools?

No. All tools on Zeugly are 100% free with no sign-ups, no registration, no subscriptions, and no usage limits. You can open any tool, complete your work, and close the tab anytime.

Are tools on Zeugly available offline?

Yes. Once the web application loads in your browser, all processing scripts and tool logics run locally. You can continue using tools like JSON Formatter, Base64 Encoder, Password Generator, and Image Resizer even if your internet connection drops.

How do client-side utility tools keep my data safe?

Unlike traditional online converters that upload your code, confidential files, or text to remote cloud servers, Zeugly uses native browser APIs (such as Web Crypto API, Canvas API, and FileReader). Your inputs are parsed and processed in your local browser memory, ensuring your code, passwords, JWT tokens, and images never leave your machine.

Does Zeugly collect or store any personal data or files?

No. We operate under a strict zero-data collection rule. We have zero backend user databases, zero file storage servers, and zero data tracking scripts. We never ask for or store names, mobile/phone numbers, or physical addresses.

What is Zeugly's cookie policy regarding Google AdSense?

We use third-party advertising partners, including Google AdSense, to serve non-intrusive advertisements. Third-party vendors use cookies to serve ads based on prior web visits. Users can opt out of personalized advertising by visiting Google Ads Settings or www.aboutads.info.

Explore All 15+ Platform FAQs in Knowledge Base