All tools

ZPL Viewer

Paste Zebra ZPL code and see the rendered label instantly.

ZPL to PDF

Turn a ZPL label file into a print-ready PDF at 203, 300 or 600 DPI.

ZPL to PNG

Export a ZPL label as a PNG image you can drop into docs or tickets.

Barcode Generator

Create Code 128, Code 39, EAN, UPC-A, ITF and Codabar barcodes as PNG or SVG.

QR Code Generator

Build QR codes for text, links, email, phone numbers and Wi-Fi networks.

QR Code Reader

Decode QR codes from an uploaded image or a public image URL.

JSON Formatter

Pretty-print or minify JSON, with the exact position of any syntax error.

JSON Validator

Check whether a document is valid JSON and get the line, column and reason when it is not.

Base64 Encoder / Decoder

Encode and decode Base64 text or files, including data URLs.

URL Encoder / Decoder

Percent-encode or decode URLs and query string components.

Unix Timestamp Converter

Convert between Unix time and human dates in any timezone.

UUID Generator

Generate cryptographically random UUID v4 values in bulk.

XML to JSON

Convert XML documents to readable JSON without touching a server.

JSON to XML

Turn JSON into well-formed XML with a root element you choose.

CSV to JSON

Convert a CSV file or pasted rows into a JSON array.

JSON to CSV

Flatten a JSON array into a CSV that opens cleanly in Excel.

Volumetric Weight Calculator

Work out dimensional shipping weight from width, length and height.

Marketplace Profit Calculator

See what is left after commission, shipping, packaging and VAT.

Quote / Proforma Invoice Generator

Build a quote or proforma invoice with your logo, line items, discounts and tax, and download it as a PDF.

SKU Generator

Generate SKUs from brand, category, color and size, in bulk across every color×size combination.

Bulk Price Updater

Apply a percentage or fixed adjustment to a spreadsheet's price column, with min/max and rounding rules.

Product Feed Validator

Check a Google Shopping-style XML product feed for missing fields, duplicate IDs and bad price/URL formats.

VAT Calculator

Add VAT to a net price or strip it out of a gross price.

Discount Calculator

Apply one or more discounts and see the real effective rate.

Profit Margin Calculator

Get profit, margin and markup from cost and selling price.

JSON Minifier

Strip whitespace from JSON to produce the smallest possible payload.

JWT Decoder

Decode and inspect JWT header, payload and signature without a secret.

Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any text.

HTML Encoder / Decoder

Encode special characters as HTML entities and decode them back.

Regex Tester

Write and test regular expressions against sample text with live highlights.

Password Generator

Generate strong, cryptographically random passwords with custom rules.

Test Credit Card Generator

Generate Luhn-valid test card numbers with expiry and CVV for development and QA.

Color Converter

Convert colors between HEX, RGB and HSL instantly with a live preview.

Word & Character Counter

Count words, characters, sentences and paragraphs in any text.

Case Converter

Convert text to camelCase, PascalCase, snake_case, kebab-case and more.

Slug Generator

Turn any title into a clean, URL-friendly slug in one click.

Text Reverser

Reverse characters, words or lines in any block of text.

Lorem Ipsum Generator

Generate placeholder text by paragraphs, sentences or words.

Percentage Calculator

Calculate percentages, percentage change and what percent X is of Y.

Age & Date Difference Calculator

Calculate exact age or the difference between two dates in years, months and days.

Temperature Converter

Convert temperatures between Celsius, Fahrenheit and Kelvin instantly.

Stock Coverage Calculator

Calculate how many days your current stock will last and the reorder point that keeps you from running out.

ROAS & Break-Even Calculator

Calculate ROAS and the break-even ROAS from ad spend, revenue and contribution margin.

Markdown to HTML

Convert Markdown to HTML with a live preview. Expose it as an API.

Text Diff Checker

Compare two texts side-by-side and highlight additions, deletions and changes.

SQL Formatter

Format and beautify SQL queries for MySQL, PostgreSQL, SQLite and more.

XML Formatter

Format, indent and validate XML documents in your browser.

Number Base Converter

Convert numbers between decimal, hexadecimal, binary and octal instantly.

URL Parser

Parse any URL into its components: protocol, host, path, query params and hash.

Cron Expression Parser

Translate CRON expressions into human-readable schedules with next run times.

Chmod Calculator

Calculate Unix file permissions visually and get the chmod octal and symbolic notation.

JSON Diff

Compare two JSON objects and highlight added, removed and changed keys.

CSS Minifier

Remove whitespace and comments from CSS to reduce file size.

YAML ↔ JSON Converter

Convert YAML to JSON or JSON to YAML instantly, right in your browser.

JSON to TypeScript

Turn a JSON sample into ready-to-use TypeScript interfaces.

CIDR / Subnet Calculator

Get network address, broadcast, netmask and usable host range from any CIDR block.

JWT Encoder

Build and sign a JSON Web Token with HS256, HS384 or HS512 using your own secret.

Base32 Encoder / Decoder

Encode text to RFC 4648 Base32 or decode it back, the format behind TOTP secrets.

Nano ID / ULID Generator

Generate URL-safe Nano IDs or sortable, timestamp-based ULIDs in bulk.

Semver Comparator

Compare two semantic versions or check whether a version satisfies a range.

Merge PDF

Combine several PDF files into one, in the order you choose.

Split PDF

Split a PDF into single pages or extract page ranges as separate files.

Compress PDF

Reduce PDF file size in your browser with a quality level you choose.

Rotate PDF

Rotate all pages or specific pages of a PDF by 90, 180 or 270 degrees.

JPG to PDF

Turn JPG and PNG images into a single PDF, one image per page.

PDF to JPG

Convert each page of a PDF into a high-quality JPG image.

Watermark PDF

Stamp a text watermark across every page of a PDF, tiled or centered, with adjustable opacity and rotation.

Compress Image

Reduce JPG, PNG or WebP file size with a quality level you choose.

Resize Image

Change an image's width and height, with an optional locked aspect ratio.

Convert Image

Convert images between JPG, PNG and WebP in your browser.

Crop Image

Drag a selection over your image and crop it to the exact region you need.

Image to Base64

Turn an image into a Base64 data URL, with ready CSS and HTML snippets.

Watermark Image

Stamp a text watermark across a JPG, PNG or WebP image, tiled or in one corner.

JavaScript Minifier

Minify JavaScript to reduce file size, using the same engine as production build tools.

Color Contrast Checker

Check whether a text and background color pair meets WCAG AA or AAA contrast.

PDF to Text

Extract the selectable text layer from a PDF, page by page, and download it as .txt.

PDF Table to Excel

Draw a box around a table in a PDF, mark its columns, and export exactly that data as Excel or CSV.

PDF Compare

Compare two PDFs page by page — see the exact text changes, or a highlighted visual diff.

PDF Page Organizer

Reorder, delete or duplicate pages by dragging thumbnails, then download the reorganized PDF.

PDF Form Filler

Fill a PDF's text, checkbox, radio and dropdown fields, then download it editable or flattened.

PDF Signature Stamp

Draw or upload a signature, place it on any page at any size, and download the signed PDF.

PDF Page Numbers

Add page numbers to a PDF — choose the position, font size, starting number, format and page range.

Markdown to PDF

Convert Markdown to a real, text-selectable PDF — headings, lists, tables, code blocks and links.

Favicon Generator

Turn one image into every favicon size a site needs, with the ready-to-paste HTML.

Image Metadata (EXIF) Viewer

View a photo's camera, date and GPS EXIF data, or download a copy with it stripped.

Base64 to Image

Paste a Base64 string or data URL and decode it back into a downloadable image.

Find and Replace

Find and replace text with plain matching or a regular expression, with a live match count.

Text Cleaner

Trim whitespace, collapse repeated spaces, remove blank lines and normalize line endings.

List Compare

Compare two lists line by line — find what's only in each, their intersection, union and duplicates.

Meta Tag Generator

Generate title, description, Open Graph and Twitter Card meta tags, ready to paste into <head>.

Robots.txt Generator

Build a robots.txt with per-agent allow/disallow rules and a sitemap reference.

Schema Markup Generator

Generate JSON-LD structured data for an Article, Product, FAQ page or Local Business.

Keyword Density Analyzer

See the top single words and phrases in a text, with a density check for a focus keyword.

Readability Score Checker

Get a Flesch Reading Ease score and grade level for English text, or an Ateşman score for Turkish.

HTTP Header Checker

See any public URL's status code and response headers, with short explanations for the cache and security ones.

Redirect Chain Checker

Follow a URL's redirects hop by hop and see the status code and destination at every step.

DNS Lookup

Look up a domain's A, AAAA, MX, TXT, CNAME and NS records, with TTL and resolver info.

SSL Certificate Checker

Check a website's TLS certificate: issuer, expiry date, days remaining and whether browsers trust it.

Broken Link Checker

Crawl a site from a starting URL and find every link that returns an error or fails to load.

Open Graph Image Designer

Design a 1200×630 social share image with a title, subtitle, logo and gradient background.

UTM Link Builder

Build one or many UTM-tagged campaign URLs from source, medium, campaign, term and content, export as CSV.

XML Sitemap Generator

Paste a list of URLs to generate a standard XML sitemap, with optional lastmod, changefreq and priority.

Hreflang Tag Generator

Generate reciprocal hreflang link tags for a page's translations, with an optional x-default.

Audio Trimmer

Cut an audio file down to the exact start and end time you need, and download it as WAV.

Audio Converter

Convert MP3, OGG, M4A and other audio formats your browser can play to WAV.

Video to Audio

Pull the audio track out of a video file and download it as WAV — nothing ever leaves your device.

Subtitle Converter & Sync

Convert subtitles between SRT and VTT, and shift every timestamp by a fixed offset to fix sync.

Audio Joiner

Combine several audio files into one, in the order you choose, and download it as WAV.

Excel ↔ CSV / JSON Converter

Export an Excel sheet as CSV or JSON, or build a new .xlsx file from CSV or JSON data.

Excel / CSV Comparator

Compare two spreadsheets by a key column and see added, removed and changed rows.

Table Merge

Stack two spreadsheets into one, or join them on a shared key column like a SQL join.

CSV Editor & Validator

Edit CSV data in a spreadsheet-like grid and check it for missing required fields or duplicate keys.

Spreadsheet Data Masking

Mask sensitive columns in an Excel or CSV file before sharing it — full, partial, hashed or email masking.

JSON Flatten / Unflatten

Flatten nested JSON to dot/bracket-path keys, or rebuild the nested structure from flat keys.

Pivot Table Generator

Summarize an Excel or CSV file into a pivot table — pick row, column and value fields and an aggregation.

JSON to Model Class

Generate C#, Java or Python model classes from a JSON sample.

cURL to Code

Turn a cURL command into JavaScript Fetch, C# HttpClient or Python Requests code.

Test Data Generator

Generate synthetic user, product or custom records as JSON, CSV or SQL, from a seed.

Excel / CSV to SQL INSERT

Turn an Excel sheet or CSV into batched SQL INSERT statements for Postgres, MySQL or SQL Server.

JSON Schema Generator & Validator

Infer a JSON Schema from a sample document, or validate JSON against a schema you already have.

JSON Query Tester (JMESPath)

Test a JMESPath query against a JSON document and see the extracted result instantly.

OpenAPI Viewer & Validator

Paste an OpenAPI or Swagger spec to browse its endpoints and catch structural mistakes.

docker run to Compose

Paste a docker run command and get the equivalent docker-compose.yml service.

Env File Diff

Compare two .env files by key and see exactly what was added, removed or changed.

HMAC Generator & Validator

Compute an HMAC signature for a message and secret, or verify one you received matches.

Certificate / CSR Decoder

Decode a PEM-encoded X.509 certificate or CSR and see its subject, issuer, validity and SANs.

.gitignore Generator

Pick your languages, frameworks and editors, merge their common .gitignore rules into one file.

Code to Image

Turn a code snippet into a syntax-highlighted, shareable PNG — no IDE screenshot needed.

Visual Label Designer

Design a shipping or product label with text, barcodes, a logo and boxes, and export it as ZPL.

Bulk Label Generator

Turn a label template and a spreadsheet into hundreds of ready-to-print ZPL labels.

Image to ZPL

Convert a logo image into ZPL graphic field data at any print size, DPI and threshold.

GS1 Barcode Parser

Decode GS1 Application Identifiers from raw or bracketed barcode data — GTIN, batch, dates, serial and more.

Barcode Reader

Read Code 128, Code 39, EAN, UPC, Data Matrix, PDF417 and other barcodes from an uploaded image.

Shipping Label Resizer

Select a label area on a PDF page and export it scaled to fit a real label size like 100×150mm.

Image to Text (OCR)

Extract editable text from a photo or screenshot in English or Turkish, entirely in your browser.

SVG Optimizer

Shrink an SVG's file size by stripping redundant markup — see the before/after size and a live preview.

SVG Sprite Generator

Combine multiple SVG icons into one symbol-based sprite sheet, with a ready-to-use usage example.

Image Color Palette Extractor

Pull the dominant colors out of an image as hex, RGB, HSL and ready-to-use CSS variables.

Image Comparison Tool

Compare two images side by side, with a reveal slider, or as a pixel-level difference overlay.

CSS Gradient & Shadow Generator

Build a linear or radial gradient, or a multi-layer box-shadow, with a live preview and copyable CSS.