Json Tools

TXT File Merger

Merge multiple text files with various strategies (concatenate, interleave, etc.)

Keys List

List own enumerable keys using lodash _.keys

For Own

Iterate over own object properties using lodash _.forOwn

Invert By

Invert keys grouped by values using lodash _.invertBy

Keys In List

List own and inherited keys using lodash _.keysIn

Get Path

Get a value at a path using lodash _.get

Invert Object

Invert keys and values using lodash _.invert

Defaults Deep

Apply deep default values using lodash _.defaultsDeep

Find Key

Find the first matching key using lodash _.findKey

For In Object

Iterate over object properties using lodash _.forIn

Assign In Object

Assign own and inherited properties using lodash _.assignIn

Group By

Group items by a derived key using lodash _.groupBy

Count By

Count items by a derived key using lodash _.countBy

XLSX Formula Injector

Fill formulas down worksheet columns and optionally lock formula cells for protected, template-friendly Excel workbooks

2026 PDF Calendar Designer

Design and export stylish 2026 printable PDF calendars with bimonthly, quarterly, semiannual, or annual single-page layouts

JSON Visualizer

Visualize and edit JSON data with interactive forms and real-time updates

Remove By Predicate

Remove items that match a predicate using lodash _.remove

Reverse Array

Reverse an array using lodash _.reverse

Intersection Arrays

Find common values across multiple arrays using lodash _.intersection

Nth Item

Get the item at a specific index using lodash _.nth

Unlimited AI Multi-Language Title Translator

Professional AI-powered multi-language title translator for movies, TV shows, anime, games, and more with JSON output

PDF Ebook Navigation

Ebook navigation demo with chapter/section jumps and return-to-top links

Uniq With

Remove duplicates using lodash _.uniqWith and deep equality

Unzip Arrays

Split grouped arrays using lodash _.unzip

Xor Arrays

Compute the symmetric difference of arrays using lodash _.xor

Zip Arrays

Combine arrays by index using lodash _.zip

Take While

Take items while a predicate matches using lodash _.takeWhile

Sorted Index

Find the insertion index in a sorted array using lodash _.sortedIndex

Tail Items

Return all but the first array item using lodash _.tail

Take Items

Take the first N items using lodash _.take

Take Right Items

Take the last N items using lodash _.takeRight

子弹图生成器

目标vs实际对比图表，包含目标线、实际值、比较范围

XLSX Dynamic Report Builder

Programmatically build dynamic Excel reports with multi-level merged headers, grouped subtotal, and dynamic columns

XLSX Template Filler

Fill existing styled/formula Excel templates by replacing {{variable}} placeholders only

XLSX Column Mapper

Rename, reorder, and drop Excel columns with alias matching and case/whitespace normalization

Initial Items

Get all elements except the last using lodash _.initial

Head Item

Get the first element of array using lodash _.head

Flatten Deep Array

Flatten array completely using lodash _.flattenDeep

Index Of

Find the index of a value in array using lodash _.indexOf

PDF Timesheet Summary

Automatically summarize timesheet/schedule data and export as PDF

PDF Code Snippet Viewer

Render code snippets with mono font, background boxes, and clickable Git repository links

PDF Comment Markup

Draw review-style side comments, arrows, and highlight regions on PDF pages

JSON File Merger

Merge multiple JSON files with various merging strategies (deep merge, overwrite, combine arrays, etc.)