How to Check an Image’s Dimensions Before You Upload It
Check an image's width, height, and file size before uploading, avoid upscaling, and test it on your site.
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186 Free Online Tools,
Built Honestly.
Calculators, converters, generators and developer tools — every one really works, each with a plain-language guide, a worked example, and its limits stated up front.
Popular: Age Calculator Word Counter Password Generator QR Code Generator Merge PDF
186Working tools
10Categories
100%Free to use
NoSign-up needed
Browse by Category
Every category, every tool — no filler pages.
- PDF Tools Merge, split, compress and convert PDF files — to Word, JPG and more. 13 tools
- Image Tools Resize, convert and compress images — JPG, PNG, SVG and WebP. 17 tools
- Text Tools Count, convert, format and clean text — words, cases, slugs and Base64. 19 tools
- Developer Tools JSON, encoders, validators and formatters developers actually open daily. 20 tools
- Math Tools Percentages, loans, age, BMI, grades and everyday math, calculated instantly. 23 tools
- Converter Tools Convert units, currency, angles and measurements without signing up. 15 tools
- SEO Tools SERP previews, headings, schema, sitemaps and meta tags for publishers. 12 tools
- Security Tools Passwords, hashes, encryption and site checks like SSL, DNS and IP. 12 tools
- Social Tools Bio, hashtag and caption generators, plus YouTube thumbnails. 5 tools
- Misc Tools Timers, calendars, random pickers and handy everyday utilities. 20 tools
Popular Tools
The ones people open first.
- .htaccess Generator Open tool →
- Age Calculator Open tool →
- Angle Converter Open tool →
- API Tester Open tool →
- Army Height & Weight Calculator Open tool →
- ASCII Converter Open tool →
- Base64 Encoder and Decoder This tool converts text to the Base64 representation used in many transport and test contexts, and it reverses Base64 text back into Unicode text when the input is valid. Open tool →
- Base64 Encoder/Decoder Open tool →
- Base64 to Image Open tool →
- Bcrypt Generator Open tool →
- Bio Generator Open tool →
- BMI Calculator Open tool →
Why NOFYI
Most tool sites show you a box and hope. We show our work.
Private by Design
Tools run in your browser wherever possible. Your files and text are not uploaded to our servers — each tool page says plainly what it does.
Examples You Can Check
Every tool page carries a worked example and its known limitations, so you can verify the result yourself instead of trusting a black box.
No Sign-Up, No Catch
Open a tool and use it. No accounts, no API keys, no paywall timers — and if a tool cannot honestly be done in a browser, it is not on this site.
- 1Pick a toolSearch or browse the categories.
- 2Enter your dataIt stays on your device.
- 3Get your resultCopy it or download it, instantly.
What Is NoFyi?
Free tools, built honestly.
NoFyi is a collection of 186 free online tools across 10 categories — PDF, image, text, developer, math, converter, SEO, security, social, and everyday utilities. Every tool is free to open and use: no sign-up, no downloads, no paywall timers.
Wherever possible, tools run entirely in your browser, so your files and text stay on your device instead of being uploaded to our servers. Each tool page carries a worked example and its known limitations, so you can check the result yourself rather than trusting a black box.
And one rule shapes the whole site: if a tool cannot honestly be done in a browser, it is not listed here.
Frequently Asked Questions
Straight answers, no fine print.
Are the tools really free?
Yes — all 186 tools are free, with no sign-up, no trial timers, and no paywall.
Do you store my files or text?
Tools run in your browser wherever possible, so your files and text are not uploaded to our servers. Each tool page says plainly what it does.
Do I need to install anything?
No. Everything works in your browser — nothing to download, nothing to set up.
What categories are covered?
Ten: PDF, image, text, developer, math, converter, SEO, security, social, and miscellaneous everyday utilities.
Can I suggest a tool or report a problem?
Yes — reach us through the Contact page (contact@nofyi.com).
From the Blog
Practical guides, written plainly.
How to Pick a Colour From an Image (Without Guessing)
Pick an exact colour from any image with an eyedropper, save the hex code, test contrast, and keep your palette small.
Read article →How to Find a Font From an Image (the Practical Way)
Identify a font from an image with a clean crop, compare candidates letter by letter, check licences, and test lookalikes.
Read article →Ready when you are
186 tools, all free, all in your browser.
Browse All Tools