Free Online Toolbox

Beautify, minify and validate any JSON with instant local pr...

Convert numbers between bases 2/8/10/16/32/36/52/58/62/64 in...

Escape and unescape HTML entities instantly. Convert < > & "...

Convert dates between YYYY-MM-DD, YYYY/MM/DD, MM-DD-YYYY, IS...

Convert between camelCase and snake_case instantly. Batch tr...

Flatten nested JSON to dot notation instantly, e.g. {a:{b:1}...

Unflatten dot-notation JSON back to nested structure, e.g. {...

Sort JSON keys alphabetically at all levels recursively, sup...

Convert between Unix timestamp (seconds/ms) and datetime wit...

Batch convert Unix timestamps to formatted dates with 7 cust...

Beautify and minify JavaScript instantly with 2-space indent...

Beautify and minify HTML instantly with 2-space indent per n...

Beautify and minify CSS instantly with 2-space indent, brace...

Format and minify SQL instantly with keyword uppercasing, li...

Format and minify YAML instantly with 2-space indent and key...

Convert JSON array to SQL INSERT statements instantly. Auto-...

Parse SQL INSERT statements back to JSON array. Supports mul...

Convert flat JSON object to Cookie string k=v; k2=v2 with en...

Parse Cookie string to JSON object with decodeURIComponent, ...

Encode JSON string to Base64 with UTF-8, supports Chinese an...

Encode XML string to Base64 with UTF-8 and decode back, supp...

Convert JSON array to CSV/Excel. Auto-extracts header, escap...

Parse CSV/Excel to JSON array. Auto-detects header, handles ...

Convert JSON arrays to CSV instantly with header extraction ...

Convert CSV to JSON arrays instantly, first row as header, a...

Convert JSON to YAML instantly with nested object/array supp...

Convert YAML to JSON instantly with indent and list parsing,...

Convert JSON to XML instantly with root wrapper, arrays as i...

Convert XML to JSON instantly, parse root and repeated tags ...

Inspect screen resolution, available area, viewport, deviceP...

Convert between JSON and PHP serialize format for strings, i...

Visually configure PWA manifest.json: fill name, short_name,...

Visual button CSS generator: adjust bg, radius, padding, fon...

CSS loading animation gallery: 8 pure CSS animations includi...

Remove code comments by language: JS // /* */, Python #, HTM...

Filter HTML instantly: remove <script>/<style>, extract text...

Merge multiple CSVs with header deduplication and column ali...

Extract image URLs from HTML via regex <img src>. Supports s...

Generate line charts instantly from label,value lines or CSV...

Generate bar charts instantly from label,value data with mul...

Generate pie charts instantly from categories and values, au...

Generate horizontal bar charts for ranking and comparison, w...

Generate area charts (filled line) for trend and cumulative ...

Generate doughnut charts with center cutout for proportion d...

Generate scatter plots from x,y points, supports header x,y,...

Generate radar/spider charts for multi-dimension comparison,...

Generate histograms from bins and frequencies, seamless bars...

Generate multi-line charts from header Month,Series1,Series2...

Generate stacked area charts for total and composition, with...

Generate waterfall charts for增减 cumulative process, auto pos...