All Tools
Pick one, drop in an image, download the result.
🖼️ Image Tools 20
Image Converter
Convert between WEBP, PNG, and JPEG formats, with adjustable quality to shrink file size.
Open tool →HEIC to JPG
Batch convert iPhone photos to JPG/PNG locally, no upload, one-click ZIP.
Open tool →Image Compressor
Preview compression in real time and dramatically reduce file size.
Open tool →Image Cropper
Crop images precisely with support for multiple aspect ratios.
Open tool →Image Stitcher
Stitch multiple images horizontally or vertically — perfect for joining screenshots.
Open tool →Image Resizer
Resize by pixels or percentage while keeping the aspect ratio.
Open tool →Watermarker
Add custom text watermarks to protect the copyright of your work.
Open tool →EXIF Remover
Strip privacy data like GPS from your photos.
Open tool →ICO Icon Generator
Generate professional .ico icon files with multiple sizes.
Open tool →Image Transformer
Easily rotate or flip images horizontally or vertically.
Open tool →Image Mirrorer
Create horizontal or vertical mirror copies with one click.
Open tool →Image Filterer
Apply artistic filters like blur, grayscale, and sepia.
Open tool →Background Remover
Remove solid color backgrounds, export transparent PNG.
Open tool →9-Grid Image Cutter
Cut one image into a 3×3 grid of nine …
Open tool →Rounded Corner Image
Crop images to rounded corners or circ…
Open tool →Image to Base64
Convert images to Base64 strings or de…
Open tool →Pixelate / Mosaic
Pixelate an image entirely or apply mo…
Open tool →Color Adjust
Adjust brightness, contrast, saturatio…
Open tool →Meme Maker
Add top and bottom text to images to c…
Open tool →Image Metadata Viewer
View image EXIF data (camera settings,…
Open tool →ID Photo Changer
Change background to white/blue/red, 1-inch & 2-inch sizes.
Open tool →📄 PDF Tools 6
PDF Merge & Split
Merge multiple PDFs into one file, or split a PDF by page.
Open tool →Image to PDF
Convert JPG, PNG, WEBP images to PDF, merge multiple at once.
Open tool →PDF Encrypt/Decrypt
Set an open password on a PDF, or remo…
Open tool →PDF Rotate
Rotate all or selected pages of a PDF …
Open tool →PDF Watermark
Add text watermarks to PDFs with adjus…
Open tool →PDF Page Numbers
Add page numbers to every PDF page wit…
Open tool →🔳 QR & Text 2
QR Code Generator
Generate QR codes from text, URLs and WiFi info with custom colors.
Open tool →Image to Text (OCR)
Extract text from images, screenshots and scans. Chinese supported.
Open tool →⚙️ Developer Tools 24
JSON Formatter
Format, minify and validate JSON.
Open tool →Timestamp Converter
Convert Unix timestamps to dates.
Open tool →URL Encoder/Decoder
Encode and decode URLs.
Open tool →Password Generator
Generate strong random passwords.
Open tool →Hash Calculator
Compute MD5/SHA hashes.
Open tool →Text Diff
Compare two texts for differences.
Open tool →Markdown Preview
Render Markdown in real time.
Open tool →Unit Converter
Convert length, weight, temperature.
Open tool →Word Counter
Count words, characters and frequency.
Open tool →Date Calculator
Days between dates, countdown.
Open tool →Color Converter
Free online color converter: HEX/RGB/HSL int…
Open tool →UUID Generator
Free online UUID generator: v4 random identi…
Open tool →Random Number Generator
Free online random number generator: ranges,…
Open tool →Base64 Text Encode Decode
Free online Base64 text encoder/decoder: tex…
Open tool →JSON to CSV Converter
Free online JSON to CSV: convert JSON arrays…
Open tool →HTML Escape Tool
Free online HTML escape tool: encode/decode …
Open tool →Case Converter
Free online case converter: UPPER, lower, Ti…
Open tool →Percentage Calculator
Free online percentage calculator: find perc…
Open tool →BMI Calculator
Free online BMI calculator: height + weight …
Open tool →Age Calculator
Free online age calculator: birth date to ex…
Open tool →Tip Calculator
Free online tip calculator: bill + tip % to …
Open tool →Loan Calculator
Free online loan calculator: amount + APR + …
Open tool →Text Replacer
Free online text replacer: batch find & repl…
Open tool →Line Sorter
Free online line sorter: sort text lines alp…
Open tool →🤖 AI Tools 32
Name Generator
12 names for companies, products, babies or usernames with meaning and style tags.
Open tool →AI Translator
Chinese-English translation with legal/medical/technical/business domain expertise.
Open tool →Tone Converter
Rewrite text into formal, humorous, gentle or sarcastic tones, 2 versions.
Open tool →Recipe Generator
Enter ingredients; AI creates 2-3 balanced home recipes with steps.
Open tool →Workout Planner
Weekly plan by goal (fat loss/muscle/toning) and setup (gym/home).
Open tool →Travel Planner
Day-by-day itinerary by destination, days and budget with tips.
Open tool →AI Prompt Optimizer
Turn rough requests into structured, h…
Open tool →Token Counter
Estimate token counts for text (approx…
Open tool →Keyword Density Checker
Analyze keyword frequency and density …
Open tool →WCAG Contrast Checker
Check if color pairs meet WCAG AA/AAA …
Open tool →Text Rewriter
Rewrite your text with AI in formal/casual/l…
Open tool →Title Generator
AI generates 10 click-worthy headlines cover…
Open tool →Text Summarizer
AI condenses long text into core summary, bu…
Open tool →PDF Summarizer
Upload a PDF and get core summary, key points and key data. For papers, contracts, reports.
Open tool →Xiaohongshu Copy
AI creates viral Xiaohongshu notes: 5 titles…
Open tool →Humanize Text
AI rewrites stiff AI-generated text into nat…
Open tool →Work Report Generator
AI turns your work log into a structured wee…
Open tool →Error Explainer
Paste an error message, AI explains the caus…
Open tool →Greeting Generator
AI generates greetings for any occasion in w…
Open tool →SQL Generator
Describe queries in plain language, AI gener…
Open tool →Excel Formula Generator
Describe needs in plain language, AI generat…
Open tool →Resume Optimizer
Paste resume bullets and target JD; AI rewri…
Open tool →E-commerce Description
Enter product selling points; AI generates t…
Open tool →Douyin Script Generator
Enter a topic; AI creates a 3-second hook, s…
Open tool →Moments Copy Generator
Enter scenario and mood; AI creates literary…
Open tool →Meeting Notes Organizer
Paste meeting transcripts; AI organizes topi…
Open tool →PPT Outline Generator
Enter a topic; AI creates a pyramid-structur…
Open tool →Business Email Generator
Paste an email or describe the scenario; AI …
Open tool →Interview Question Generator
Enter a role and resume; AI creates 10 layer…
Open tool →Emoji Translator
Translate between text and emoji: sentences …
Open tool →Regex Generator
Describe matching needs in plain language; A…
Open tool →Code Comment Generator
Paste code; AI adds line and doc comments ex…
Open tool →Text to JSON Converter
Extract unstructured text into structured JS…
Open tool →🎬 Audio & Video 2
Video to GIF
Convert video clips to GIF animations …
Open tool →Audio Cutter
Cut audio clips with configurable star…
Open tool →Why choose CZC Tools?
100% Private
All processing happens locally in your browser — images are never uploaded to any server.
Lightning Fast
No uploads or downloads needed — processing completes instantly, even for large files.
Completely Free
No watermarks, no hidden fees, no usage limits — simple and efficient.