Connection Lost

Your device went offline. Browser-based tools that already loaded may keep working, while network-assisted tools need a connection.

Offline-Ready Tools

Converters & Extractors
Calculators & Formulas
Base64 & JSON Parsers
Password & Hash Keys
Browser-First Utility Workspace

Everyday tools,
clear handling.

A practical workspace for file, media, developer, business, and mockup tasks. Browser-based tools are labeled for local processing; downloaders, AI, Temp Mail, and API-backed tools use clear network-assisted handling.

Popular

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Tool-specific processing notices on every workflow
Privacy-First Processing
No Mandatory Installs
Secure Browser Sandbox
Local-First Architecture

What is Letido?

Letido is a browser-first online toolbox listing 289 utilities across PDF, image, media, developer, business, generator, and mockup workflows.

Many file utilities use browser APIs such as Canvas, WebAssembly, and client-side PDF libraries. Network-dependent tools such as AI generators, downloaders, Temp Mail, and API workflows are labeled separately before use.

Browser-Based Options
Network Tools Labeled
Standard Tools Free

Browser Tools

PDF, image, QR, developer, and text utilities can process standard inputs in the browser with no upload required.

Native Speeds

Local converters and editors avoid server queues when the workflow can run in the current browser session.

Offline-Ready Cases

Some browser-based tools can continue after loading; network-assisted tools require internet connectivity.

No Required Signup

Core tool workflows are accessible without creating an account; saving and workspace features are optional.

Premium Workspace Hub

Unlock Your Personal Dashboard Workspace

Create a free Letido account to sync your conversion history logs, design beautiful mockup templates, create structured folders, and customize static/branding QR codes across all your devices.

Save Mockups & Designs
Unlimited Custom Folders
Cloud Backup & Sync
Architecture Strengths

Why Choose Letido?

A browser-first workspace with clear handling notes for each tool type.

Browser-Based Tools

PDF, image, QR, developer, and text utilities can run locally for their standard workflow.

Clear Data Handling

Network-assisted tools are labeled so you can decide what to submit before processing.

Fast Local Workflows

Browser-capable tools avoid upload queues and use client-side libraries where supported.

Universal Formats

Export and convert native standards like PDF, PNG, JPEG, SVG, JSON, MP3.

Free Standard Access

Core tools are available without a required account; optional workspace features may use saving.

Got Questions?

Frequently Asked Questions

The listed tools are free to access for the standard workflow, without a required signup.
Many PDF, image, QR, developer, and text utilities run in the browser with no upload required. Downloaders, AI tools, Temp Mail, and API-driven utilities use secure network-assisted processing where needed.
Some browser-based tools can keep working after the page loads. Network-dependent tools, account features, ads, AI, Temp Mail, and downloaders require internet connectivity.
Absolutely. Every tool and workspace on Letido is fully mobile-responsive and optimized for touch inputs on smartphones and tablets.
Letido keeps core utility inputs out of account storage unless you choose a saving or network-assisted feature. See each tool's processing notice for the exact workflow.
289Listed Tools
19Tool Categories
BrowserPrimary Surface
LabeledProcessing Notes
OptionalAccount Saving
FreeStandard Access

Transform your daily workflow.

Start with the standard browser utilities, then check each tool notice before using network-assisted workflows.