All Toolkits

A toolkit is a single-page collection of related tools grouped under one URL. Instead of visiting separate pages for a word counter, case converter, and lorem ipsum generator, the Writer Toolkit puts all three on one tabbed page. Each of the 17 toolkits covers a specific workflow: writing, finance, design, marketing, productivity, health, career, SEO, home, travel, PDFs, business, students, social media, creators, developers, and everyday tasks.

Seventeen toolkits with 90+ individual tools between them. You can open any toolkit from the Toolkits dropdown in the navigation, or browse them all on this page in the Detailed Toolkit Breakdown section below.

No. Every toolkit opens directly in your browser. If you want offline access, you can save any toolkit page (Ctrl+S or Cmd+S) as a single HTML file and open it later without an internet connection.

Yes. Every toolkit page is responsive and works on phones, tablets, and desktops. The tab bar at the top of each toolkit scrolls horizontally on small screens so you can switch between tools with a thumb swipe.

Most tools run entirely in your browser. The currency converter and QR code generator fetch data from public APIs to get live exchange rates and render QR images, but the data you enter (amounts, text) stays in your browser. Image tools never upload your photos — they process pixels locally using the Canvas API.

Yes. The toolkits are free to use for personal and commercial projects. If a toolkit generates output you embed in a product (like a QR code, palette, or generated password), the output is yours to use however you like.

The functionality is identical. A toolkit simply groups related tools into one tabbed page so you can switch between them without navigating to different URLs. Choose whichever interface you prefer — individual pages or grouped toolkits.

Yes. Each toolkit is a standard HTML file with embedded CSS and JavaScript. Save the page (Ctrl+S), open it in any text editor, and customize the code, add new tools, or remove ones you don't need. The code is uncompressed and readable.

Toolkits are useful when you need to switch between related tools in a workflow. A writer drafting a blog post moves between word counting, case conversion, and reading time estimation dozens of times — having them on one tabbed page saves context-switching. For one-off tasks, a single tool page works just as well.

Yes. All 17 toolkits and 90+ individual tools are free to use. There are no premium tiers, no locked features, and no usage limits.

Yes. Once the page is loaded, all tools run locally in your browser. You can save the page (Ctrl+S) and open it later without an internet connection.

Everything is stored in your browser's localStorage on your device. Nothing is uploaded to a server. If you clear your browser data, your saved items will be lost.

Not automatically. Each browser stores its own data. To use the same notes on multiple devices, save the HTML file to a cloud drive like Dropbox or Google Drive and open it from each device.

The calculator supports both. For unweighted GPA, every course uses the same 4.0 scale. For weighted GPA, AP/IB/Honors courses add an extra point (e.g. A in AP = 5.0 instead of 4.0). Toggle the weighted option on the toolkit page.

The timer keeps running while the tab is open in the background, but stops if you close the tab. For reliable timing during study sessions, keep the tab open in its own window.

It uses the HSL color wheel and applies harmony rules: analogous (adjacent hues), complementary (opposite hues), triadic (120° apart), tetradic (90° apart), or monochromatic (same hue, varying lightness).

Yes. Click any color swatch to copy its HEX value, then paste into Figma, Sketch, or Adobe's color picker. You can also copy all hex values at once.

Yes. The formatter parses your input as JSON. If parsing fails, it shows the exact error position and message so you can fix the syntax. Valid JSON is pretty-printed with 2-space indentation.

Yes. The encoder uses the browser's btoa function on UTF-8 encoded text. For binary files, you'd need to convert to a base64 string first using FileReader.readAsDataURL, which the tool does not handle directly.

Hashtags are generated from your keyword using common suffixes and patterns (e.g. #coffee, #coffeelife, #coffeegram). They are not pulled from live trending data, so check relevance and current popularity before using.

Instagram allows up to 30, but engagement usually peaks at 9-11 highly relevant tags. Twitter and LinkedIn perform best with 1-2 hashtags. Always filter generated suggestions for relevance to your specific post.

It uses a simple weighted-average model: enter fixed costs, average price per unit, and average variable cost per unit. For multi-product break-even with separate contribution margins, calculate each product individually.

It fetches live indicative rates from a public exchange-rate API each time you open the converter. Your bank or card network may charge a slightly different rate with a 1-3% spread.

Reading time uses an average of 200 words per minute for adult silent reading. The tool divides your word count by 200 and rounds up, so a 600-word article shows as 3 minutes.

It compares line by line, so it works well for typical articles and letters up to a few thousand lines. For very large files (10,000+ lines), use a dedicated diff tool like Beyond Compare or VS Code's diff view.

Banks often quote Annual Percentage Yield (APY) which already includes compounding. If you enter the nominal annual rate and pick a compounding frequency, the tool will arrive at the same APY. Make sure you're comparing like with like.

No. Every calculation happens in your browser tab. The numbers you type never leave your device, which makes the toolkit safe for personal budgeting.

WCAG AA requires 4.5:1 for normal text and 3:1 for large text (18pt or 14pt bold). WCAG AAA requires 7:1 for normal text and 4.5:1 for large text. The contrast checker shows pass/fail for all four levels.

No. The image is loaded into a canvas element in your browser. The color at the cursor position is read directly from the canvas pixel data using getImageData. Nothing is transmitted.

It combines curated prompt templates with your subject and tone inputs to produce structured prompts for image generators (Midjourney, DALL-E), chat assistants (ChatGPT, Claude), or writing tools. The output is plain text you can copy and paste.

No. The tool creates static QR codes that encode your text directly into the pattern. They work forever with no service required, because the data lives inside the code itself.

The pomodoro technique uses 25-minute focused work sessions followed by 5-minute breaks. After four sessions, take a longer 15-30 minute break. The timer in this toolkit follows the standard 25/5/30 cycle but you can customize it.

All tasks are saved in your browser's localStorage under a unique key. Nothing is sent to a server. If you clear browser data or use private/incognito mode, your tasks will be lost.

BMI is a screening tool based only on height and weight, so it overestimates body fat in muscular athletes and underestimates it in older adults who've lost muscle. Use it as a starting point, not a definitive measure.

No. The calculators are general informational tools. For diagnosis, treatment, or personalized health guidance, consult a licensed healthcare provider.

A resume is a 1-2 page summary tailored to a specific job, focused on skills and achievements. A CV (Curriculum Vitae) is a longer, comprehensive document covering academic and professional history, used mainly for academic, research, or medical roles.

Open the template, fill in your details, then press Ctrl+P (Cmd+P on Mac) and choose 'Save as PDF' as the destination. Templates are pre-formatted to print cleanly on A4 or Letter paper.

Google typically truncates meta descriptions around 155-160 characters on desktop and 120 characters on mobile. Aim for 150-160 characters with the primary keyword near the start.

Use lowercase letters, separate words with hyphens (not underscores), keep it under 75 characters, and include the primary keyword. The slug generator automatically removes stop words like 'the', 'a', 'of'.

The mortgage calculator factors in property taxes and insurance alongside principal and interest, giving a more realistic monthly payment for homeowners. The loan calculator covers general installment loans like a car or personal loan.

The base calculator includes principal, interest, taxes, and insurance (PITI). For PMI (Private Mortgage Insurance) and HOA fees, add them as separate monthly costs in the budget template.

The currency converter fetches live indicative rates from a public exchange-rate API each time you open the tool. Your bank or card network may charge a different rate, usually with a 1-3% spread.

It uses your browser's built-in Intl.DateTimeFormat with the IANA time zone database, which automatically accounts for daylight saving time rules in every region.

Open any template, fill in the fields, then press Ctrl+P (or Cmd+P on Mac) and choose 'Save as PDF' as the destination. The templates are pre-formatted to print cleanly on A4 or Letter paper.

Yes. Each template is a standard HTML file. Save the page (Ctrl+S), open it in any text editor, and adjust the layout, colors, or fields to match your brand.