Skip to main content
Toolzum
1,070+ tools · 97% local · free to start

The browser
supercomputer.

1,070+ Privacy-first tools — PDF, images, video, converters, AI & more. All in one place.

Explore All Tools
1,070+Tools
97%Local
37Cloud AI
24/7Available
toolzum — browser-supercomputer

What are you working with?

Pick an action above — or just drop a file and we'll match its format

Drop your file here

or browse

Up to 5 files per batch · size limits shown per file · raise limits

IMG VID PDF DOC AUD
What can you drop here?

Images (JPG, PNG, WebP…) → compress, convert, resize, remove background · HEIC, SVG, GIF, TIFF, BMP, AVIF, ICO → the matching converter

PDFs → compress, edit, merge, split

Video (MP4, MOV, MKV, WebM, AVI) → compress, convert, extract MP3 · older formats (WMV, FLV, 3GP) aren't supported yet

Audio (MP3, WAV, FLAC, OGG, M4A, AAC, WMA, Opus, AIFF) → compress, convert

Documents (DOCX, ODT, EPUB…) → convert · Spreadsheets (XLS, XLSX, CSV) → to JSON · Text (.txt, .md, .json) → count, format

PPT decks aren't supported yet — they land on the tool directory.

Limits: shown per file above (each tool states its own) · files stay in this browser · up to 100 files / 300MB ride along, the rest open the tool directly · executables refused · several files open the bulk tools.

Your file is only inspected in this browser
Browse by category
How It Works

Three clicks. Process locally.

No accounts, no upload queues, privacy first.

01

Open a Tool

Browse hundreds of utilities. Pick one. No sign-up needed.

02

Process Instantly

Most tools run in your browser via WebAssembly. Cloud AI tools clearly marked.

03

Download Results

Your data never leaves your machine for local tools; cloud AI tools process server-side and are marked.

No sign-up required. All tools are free to start.

Privacy First

Most tools never upload your files — they run locally via WebAssembly.

Lightning Fast

Zero upload times. Processing starts the moment you select a file.

Edge Powered

Powered by Cloudflare Workers for instant load times worldwide.

Everything You Need

1,070+ tools, 20 categories

From PDF wrangling to AI generation — one platform does it all.

Image

Resize, crop, convert & optimize images

50 tools →

PDF

Compress, merge, split & convert PDFs

74 tools →

AI Tools

Generate, summarize & analyze with AI

16 tools →

Video

Trim, compress & transcode videos

19 tools →

Audio

Convert, cut & enhance audio files

16 tools →

Convert

Convert between 50+ formats

39 tools →

Developer

Format, minify & debug code

242 tools →

Calculator

Math, stats, finance & unit converters

66 tools →

Finance

Currency rates, GST, loans & budgeting

33 tools →

Health

BMI, calories, body fat & fitness trackers

33 tools →

Text

Word counter, citation gen, text styling & more

27 tools →

Utility

Password gen, QR codes, UUIDs & everyday tools

83 tools →

Privacy

Metadata remover, ad blocker & privacy cleaners

8 tools →

SEO

Keyword tools, meta tags, robots.txt & audits

14 tools →

Design

Color palettes, gradients & typography tools

17 tools →

Branding

Logos, business cards, brand kits & social media assets

8 tools →

Growth & Marketing

ARR, MRR, LTV, CAC, CPM, ROAS & SaaS analytics

23 tools →

Transcription

Speech-to-text, subtitles & caption tools

6 tools →

Productivity

Todo lists, habit trackers & time tools

2 tools →

Indian Utilities

Aadhaar, PAN, GST, IFSC & India-specific tools

27 tools →
1,070+ total& counting
Built for Everyone

One platform. Every workflow.

Whether you design, develop, create, or run a business.

For Designers

  • Remove image backgrounds instantly
  • Batch resize product photos
  • Generate AI avatars & thumbnails
  • Extract colors from any image
Explore tools

For Developers

  • Format & minify JSON/CSS/JS
  • Generate regex patterns with AI
  • Convert Markdown to HTML
  • Create fake JSON data for testing
Explore tools

For Content Creators

  • Compress videos for social media
  • Transcribe audio to text
  • Generate blog titles with AI
  • Create branded social media posts
Explore tools

For Business

  • Merge & split PDF contracts
  • Generate GST invoices
  • Calculate SaaS pricing
  • Create professional business cards
Explore tools

For Students

  • Convert documents between formats for assignments
  • Generate citations & bibliographies
  • Compress images for submissions
  • Calculate GPA, loans & budgets
Explore tools
Why Toolzum

Built different by design.

Every detail engineered for speed, privacy, and delight.

Zero Data Leaving

Local-processing tools run entirely client-side. No servers, no logs, no uploads.

Edge-Accelerated

Powered by Cloudflare Workers & WebAssembly for near-instant execution.

1070+ Tools

From PDF compression to AI image generation — 1070 tools and counting.

Works Offline

Many tools remain functional even without an internet connection.

Beautiful by Default

Dark & light themes. Fluid animations. Typography crafted for readability.

Generous Free Limits

Unlimited local downloads; Pro raises file, batch and AI caps.

Most Used Tools

The utilities our users reach for every day.

PDF

PDF Compressor

Trims PDF file size by stripping redundant metadata and optimizing object streams — best on text-heavy documents. Cannot recompress embedded images (the main size driver); for scan-heavy PDFs use Bulk PDF Size Reducer. Handles PDFs up to 125MB.

Image

Image Compressor

Shrink JPG, PNG, and WebP photos with an Image Quality slider (10–100%, default 80%) plus a Resolution Scale slider, shown in Before/After panels with exact KB and -% savings. Single-image uploads up to 50MB — local library work, unlimited saves.

Image

Background Remover

Segments the foreground subject from an image using a neural network, producing a transparent PNG with clean edges. Handles hair, fur, and semi-transparent regions better than chroma-key or magic-wand selection. Max 50MB.

Utility

QR Code Generator

Renders a scannable QR code from any text or URL with a client-side Reed-Solomon encoder at fixed high error correction. Customize size, colors, and center logo, then download the PNG — free, local, no signup.

indian-utilities

GST Calculator

Computes GST-inclusive and GST-exclusive amounts for Indian tax slabs (5%, 12%, 18%, 28%) with net, GST value, and total shown.

Text

Word Counter

Analyzes your writing with real-time word count, character counts with and without spaces, sentence and paragraph counts, plus estimated reading time (200 wpm) and speaking time (150 wpm). Essential for writers, students, and SEO professionals tracking length and pacing.

ProAI

AI Image Generator

Turn text prompts into high-resolution images with three engines: free Pollinations drafts, 1-credit FLUX drafts, and 5-credit Gemini HD for Pro. Designers prototype hero art in seconds — free to start, sign in for credits.

Video

Video Compressor

Reduces MP4, MOV, and WebM video file sizes with a configurable CRF 20–40 slider (default 28, libx264 fast preset), plus a GIF mode with color-palette control. Videos never leave your device — compression runs locally in your browser with FFmpeg WASM.

Audio

Text to Speech (TTS)

Generate natural-sounding speech from text using your browser's built-in voices. Adjust speed and pitch — download your text as .txt.

View all tools
Pro

Free today. Pro when you need more.

All tools run in your browser completely free. Upgrade when you hit a limit — bulk processing, larger files, and AI extras.

Free
$0
  • Single file processing
  • Generous size ceilings (image 50 · PDF 125 · audio 100 · video 250MB)
  • Unlimited client-side tools (PDF, images, video)
  • Local processing
  • —Bulk batch processing
  • —AI generation & extraction
Popular
Pro
$9.99
/month, cancel anytime
  • Batch up to 500 files at once
  • Files up to 2GB
  • Unlimited downloads
  • Local processing
  • Bulk batch processing
  • AI generation & extraction
See full pricing
1070+
Tools
Across 20 categories
20
Categories
From PDF to AI generation
97%
Client-Side
1033 tools, zero uploads
Free
To Start
No credit card required

Share your experience

Real words from real users. Every review below was written by a visitor and approved by a human.

Share your experience

First name only. No links. A human reads every review before it appears. No account needed.

Suggest a tool

If you need a tool that isn't on the roadmap, let us know! We design in-house, client-side algorithms based on community requirements.