Free Online Tools

Compress JPG/PNG/WebP, preserve quality

JPG / PNG / WebP interconvert

Free crop + fixed aspect ratios

Batch resize with aspect lock

Logo + batch + 4-level error correction

View GPS / camera data + one-click strip

6 styles + single / team / emoji / multi-size

Upload image to decode + auto-classify

English / Chinese / Traditional text recognition

Instagram / WeChat Moments 3×3 grid

Horizontal / vertical / grid stitch

Text / image watermark

Data URL / CSS / HTML output

Auto-generate palette from image

Full icon set + ICO

9 code types / PNG + SVG

Merge / split / rotate / delete / watermark / number / encrypt / convert / sign / extract

Combine multiple PDFs into one

Split PDF by page range

Rotate single or all pages

Remove selected pages

Text watermark with opacity

Left / center / right page numbers

Set PDF open password

Each page as PNG

Pull copyable text from PDF

Pull embedded images from PDF

Handwritten signature + place on page

Combine images into one PDF

ffmpeg.wasm local compression · H.264 three-tier quality

Native getDisplayMedia, local recording, no install

Native getUserMedia + live volume meter, M4A / WebM

Visual box-shadow editor

Gradient color editor

border-radius tweaker

backdrop-filter editor

Visual flex layout

Visual grid layout

filter effect tweaker

Pure-CSS triangle

Clip-path shape presets

8 loader animations

Multi-layer text-shadow

Multi-color gradient + presets

7 color harmony rules

WCAG AA / AAA accessibility

HEX / RGB / HSL + eyedropper

Dual loan comparison + early payoff savings

China-specific individual income tax

China-specific offer comparison with commute / overtime cost

Body Mass Index

Date difference / add / subtract days

China-specific kinship term calculator

Percent change / growth rate

Exact age + zodiac

Visualize life in weeks

Decision maker + spinner wheel

How much is this meeting burning + fun comparisons

China-specific real APR exposer for installment loans

9 categories, 80+ units in one place

4.0 / 4.3 / 5.0 scales + target prediction

Chars / words / sentences + 16 platform limits

China-specific clickbait title detector

China-specific advertising law sensitive-word checker

Line-by-line diff

Jaccard / Cosine / Levenshtein algorithms

Mermaid + KaTeX + export PNG long image

CSV / TSV / Markdown / JSON / HTML five-way

A / AAAA / MX / TXT / CNAME / NS all at once

Prettify + JSONPath + diff

fetch / axios / Python / Go / PHP / Java / JS

Text & image two-way encode/decode

encodeURIComponent / decodeURIComponent

Unix timestamp + 8 timezones + shortcuts

Find the golden hours across cities

MD5 / SHA-1 / 256 / 512

HS256 verify + live expiry countdown

v4 / v7 batch generate

30+ presets + replace + cheat sheet

Human-readable + next executions

HEX / RGB / HSL / HSB / CMYK

Reference for codes 100 to 599

Request / response headers + MIME

Binary / octal / decimal / hex

Subnet mask / range / host count

Bidirectional conversion

Generate TS interfaces

Go / Java / Python / Rust struct

Tones / heteronyms / initials

Mainland / Taiwan / HK variants

camelCase / snake_case / kebab-case +10 more

Dedupe / sort / filter / prefix / suffix

Based on academic IPIP + Big Five dual report