Prepare the right input
Use the requested format, units and complete source information.
Free online tools for calculations, conversions, images, text, and more. Fast, simple and easy to use.
338+Focused Tools
11Categories
No SignupVisitor account
Browser-FirstWhere supported
Clear ResultsGuidance included
Start with frequently used tools for files, text, development and public website checks.
Check if any website is online or down instantly.
Compress JPG, PNG, or WebP images online.
Compress PDF files directly in your browser.
Count words, characters, paragraphs and more.
Calculate percentage with 5 different calculation modes.
Format, validate, minify, and copy JSON.
Generate QR codes for URL, text, email, phone, SMS, WiFi, vCard and more.
Analyze page loading speed and response time.
Choose the type of task you need to complete.
Every Uptime Fixer tool page explains what to enter, what the result represents, and what to verify before you use it. That context matters because a number, file conversion or public diagnostic is only useful when its scope is understood.
You will also find practical examples, operation-specific limitations, privacy notes and checks appropriate to the task. Important financial, medical, legal, security or production decisions should still be confirmed with a qualified person or the relevant service provider.
Use the requested format, units and complete source information.
Read what the result measures and which settings shaped it.
Account for browser, provider, input and point-in-time constraints.
Keep originals and double-check important results before relying on them.
Find the right utility through search, a category or a related tool.
Enter values, text, a supported file, or a public URL as requested.
Read the guidance before copying, downloading or acting on the output.
Move between related tools without losing sight of the job you are completing.
Clear controls keep each page centred on one practical task.
Pages explain relevant assumptions and what a tool cannot guarantee.
Browser processing is used where supported; live public checks are validated, limited and clearly explained.
Responsive interfaces work across current desktop, tablet and mobile browsers.
Only provide the information needed for the task and review the notice shown by each tool.
Many text and file tasks can run in the browser. Device memory and browser support still affect large jobs.
Public checks use validated site endpoints with network restrictions, response limits and rate controls.
Never enter passwords, private keys, live tokens or confidential records unless a trusted workflow explicitly requires them.
Clear explanations for common files, technical checks and everyday online tasks.
A strong freelance proposal does more than quote a price: it shows that you understand the client’s problem…
5 min readA proforma invoice looks similar to a final invoice, but its purpose is usually to present expected charges…
5 min readA purchase order turns an internal buying decision into a clear document that a supplier can review, accept,…
5 min readA professional invoice should tell the client who is charging, what was supplied, how the total was calculated,…
5 min readQuick answers about using Uptime Fixer tools, processing, privacy and results.
Yes. The public directory contains tools that work without a visitor account or a paid API key. Live website checks can still be temporarily affected by the tested server, hosting limits or a public no-key service.
No visitor account is required to open and use the tools. Some external services or destinations linked from a result may have their own account requirements.
Processing stays in the browser where the feature supports it. Live website diagnostics use protected, rate-limited site endpoints and accept only the public target required for the check.
Yes. The interfaces are responsive, although large files and demanding media tasks usually work more reliably on a desktop device with sufficient memory.
Check the original input, units and selected settings. Keep source files, rerun time-sensitive diagnostics, test technical output outside production and use a qualified professional for high-stakes decisions.
Search the complete collection or browse by category.