90 tools · v2.4 · all browser-side

A workshop of
lse one-click tools.

90 fast, stubbornly private utilities for PDFs, images, text and media. Drop a file or type what you need — the hammer is already in your hand.

⌘K

Live · updated just now

Tools shipped

90 total

PDF

Merge, split, edit, convert

23 tools

01·PDF

Edit PDF

Live-edit PDF pages with text annotations, page reorder, rotate, and delete.

Combine multiple PDF files into one document in a single flow.

Extract selected pages or ranges into separate PDF outputs.

Convert one or more JPG images into a single PDF document.

Convert each PDF page into JPG images for easy sharing and reuse.

Reduce PDF file size while preserving readability.

Add a handwritten or typed signature to any page of a PDF document.

Password-protect a PDF with AES-256 encryption and configurable permissions.

Remove permission restrictions (printing, copying, editing) from a PDF.

View and edit PDF document properties like title, author, subject, and keywords.

Convert PDF documents to editable Word (.docx) files with text extraction.

Rotate all or selected PDF pages by 90, 180, or 270 degrees.

Add a text watermark to PDF pages with configurable opacity, position, and size.

Add page numbers to a PDF document with flexible position and formatting options.

Convert each PDF page into high-quality PNG images with lossless compression.

Convert one or more PNG images into a single PDF document with original quality.

Extract plain text content from PDF documents for easy copying and reuse.

Flatten form fields and annotations into static PDF content, making them non-editable.

Trim margins from PDF pages by adjusting the crop box with precise point values.

Permanently black out sensitive content on PDF pages with drawn redaction boxes.

Visually compare two PDF documents side by side, page by page.

Extract text from scanned PDFs using browser-side OCR — supports 11 languages.

Detect and fill interactive form fields in PDF documents directly in your browser.

/pdf-form-filler

Open

Image

Resize, crop, convert, compress

15 tools

02·Image

Crop Image

Crop images with live selection, aspect-ratio presets, and export format controls.

Change image dimensions quickly while keeping aspect ratio optional.

/resize-image

Open

02·Image

Image Format Converter

Convert images between JPG, PNG, and WEBP with quality controls.

/image-format-converter

Open

02·Image

Remove Background

Remove solid or near-solid backgrounds from images using color threshold processing.

Compress images to reduce file size while controlling quality level.

Extract dominant colors from an image and copy hex or RGB values to clipboard.

Add a text watermark to images with customizable position, size, color, and opacity.

Convert images to a PDF with page size, orientation, margin, and fit options.

Convert Apple HEIC/HEIF photos to JPG format for universal compatibility.

Convert SVG vector graphics to PNG raster images at any resolution.

Convert WebP images to JPG or PNG format for broader compatibility.

Create memes with custom top and bottom text on any image.

/meme-generator

Open

02·Image

Screenshot Beautifier

Add beautiful backgrounds, shadows, and rounded corners to screenshots.

/screenshot-beautifier

Open

02·Image

Extract Text from Image

Extract text from images using OCR — supports 13 languages, runs entirely in your browser.

Turn text into a PNG image — pick a font, color, background, and size, then download.

/text-to-image

★ StudioOpen

Utility

Text, code, converters

37 tools

03·Utility

ZIP Archiver

Create ZIP archives from multiple files or extract files from an existing ZIP — entirely in your browser.

Encrypt or decrypt any file with AES-256-GCM. Password-derived keys via PBKDF2 — all in your browser.

Generate QR codes from text or URLs and download as PNG or SVG.

/qr-code-generator

Open

03·Utility

Base64 Encoder / Decoder

Encode text or files to base64, or decode base64 strings back to text.

/base64-encoder-decoder

Open

03·Utility

Word Counter

Count words, characters, sentences, paragraphs, and estimate reading time from any text.

Format, validate, and minify JSON with syntax highlighting.

/json-formatter

Open

03·Utility

URL Encoder / Decoder

Encode or decode URL components for safe use in links and APIs.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.

/hash-generator

Open

03·Utility

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words.

/lorem-ipsum-generator

Open

03·Utility

Markdown Preview

Write Markdown and see a live HTML preview side by side.

Compare two blocks of text and highlight the differences line by line.

Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case, and more.

Generate strong, random passwords with customizable length, character sets, and strength indicator.

Convert between Unix timestamps and human-readable dates with a live clock and multiple formats.

Convert CSV data to JSON and back, with support for custom delimiters and header rows.

Test regular expressions with live matching, capture groups, and flag controls.

Decode JSON Web Tokens to inspect the header, payload, and signature.

Generate random UUID v4 identifiers individually or in bulk.

/uuid-generator

Open

03·Utility

Number Base Converter

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

/number-base-converter

Open

03·Utility

SQL Formatter

Format, indent, and minify SQL queries for better readability.

/sql-formatter

Open

03·Utility

Cron Expression Parser

Parse cron expressions into plain English descriptions with next scheduled run times.

Paste or upload HTML and export it as a PDF with styles preserved.

Write or paste Markdown and export it as a clean, styled PDF document.

Generate a complete favicon package from any image — ICO, PNG, and Apple Touch Icon.

/favicon-generator

Open

03·Utility

Color Palette Generator

Generate harmonious color palettes or extract dominant colors from images.

/color-palette-generator

Open

03·Utility

Unit Converter

Convert between units of length, weight, temperature, data size, time, area, and speed.

Focus timer with configurable work and break intervals, session tracking, and audio alerts.

Clean and minify SVG files by removing metadata, comments, and editor bloat.

Convert JSON arrays to CSV with automatic key flattening and proper escaping.

Generate SEO meta tags, Open Graph, and Twitter Card markup with live Google preview.

Build robots.txt rules visually with allow/disallow paths, sitemap, and crawl delay.

/robots-txt-generator

Open

03·Utility

Aspect Ratio Calculator

Calculate aspect ratios from dimensions, or resize maintaining a ratio. Common presets included.

/aspect-ratio-calculator

Open

03·Utility

Crontab Generator

Build cron expressions visually with presets, live description, and next run times.

/crontab-generator

Open

03·Utility

Color Contrast Checker

Check WCAG contrast ratios between foreground and background colors with AA/AAA pass/fail.

/color-contrast-checker

Open

03·Utility

Tip Calculator

Calculate tip and total with preset percentages, custom amounts, and bill splitting.

/tip-calculator

Open

03·Utility

JSON to YAML Converter

Convert between JSON and YAML formats instantly with syntax validation.

Format, prettify, and validate XML with customizable indentation.

/xml-formatter

Open

Media

Audio, video, recording

15 tools

04·Media

pop

Audio Trimmer

Trim audio files with a visual waveform editor. Set start and end points and download the clip.

Extract the audio track from any video file and download it as a standalone audio file.

Record your screen, a window, or a browser tab with optional microphone audio.

Convert text to spoken audio using your browser's built-in speech synthesis voices.

Adjustable BPM metronome with tap tempo, time signatures, and accent beats.

Reduce video file size with quality presets — all processing in your browser.

Cut and trim video clips to the exact length you need — no upload required.

Record audio from your microphone with a live level meter, gain control, and pause/resume.

Combine multiple audio files into one track with optional crossfade transitions.

Reverse any audio file and download the result as a lossless WAV.

Detect the tempo (BPM) of any audio file using onset detection and autocorrelation.

Speed up or slow down any video with adjustable playback rate and preview.

Convert a video clip to an animated GIF with adjustable frame rate, resolution, and duration.

Multi-track audio editor — drop in clips, trim, fade, pan, set volumes, and export a mastered WAV. All in your browser.

Full-screen video editor — stack clips, trim, change speed, apply filters, mix audio, and export. All in your browser.

/video-studio

★ StudioOpen

Private by default

Files stay in your browser. No account. No upload unless absolutely necessary.

Fast as a hammer

Tools load on demand, process on the client, and get out of your way.

One consistent shop

Same keyboard, same vocabulary — 90 tools that feel like one app.

/since-2024

Small tools, made with care.

Changelog Suggest a tool

A workshop oflse one-click tools.

A workshop oflse one-click tools.

A workshop of
lse one-click tools.

A workshop of
lse one-click tools.