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Resources

Guides for selling more and automating the rest

Practical, specific playbooks on Shopify, Amazon and AI automation — written from the work we do, not rewritten from other blogs. Each one links to the service it supports.

Tool guides 41 how-tos

Step-by-step guides for the free tools on this site.

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10 Best Free AI Tools With No Signup (2026)The best free AI tools you can use right now with no signup and no API key — image generation, writing, text-to-speech,
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Free AI Image Generator, No Signup or API Key (2026)Generate images from text with AI for free — no signup, no API key, 5 free runs a day. How to make AI art in your browse
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Free Client-Side PDF Tools That Don't Upload Your Files (2026)A 2026 guide to free PDF tools that process files in your browser — no upload, no signup, no limits — and why that matte
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How to Add, Subtract, Multiply and Divide FractionsLearn the four rules for fractions and mixed numbers, how to simplify with the greatest common factor, and the mistakes
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How to Balance Chemical Equations Step by StepLearn how to balance chemical equations by counting atoms, with a propane example, tips for polyatomic ions and when to
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How to Calculate Attendance Percentage and the 75% RuleWork out your attendance percentage, how many classes you must attend to reach 75% (or any target) and how many you can
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How to Calculate Exact Age in Years, Months and DaysLearn how to calculate someone's exact age on any date, how leap-day birthdays and short months are handled, and how to
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How to Calculate GPA and CGPA: Formula and ExamplesLearn how to calculate semester GPA and cumulative CGPA step by step with the credit-weighted formula, a worked example
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How to Calculate Hours Worked, Breaks and Overtime BasicsLearn how to add up hours worked, subtract unpaid breaks, handle overnight shifts and convert minutes to decimal hours f
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How to Calculate Percentage: Formulas and Easy ExamplesLearn to find a percentage of a number, what percent one number is of another, percentage change and reverse percentages
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How to Calculate Standard Deviation: Steps and ExampleLearn how to calculate standard deviation by hand, the difference between sample and population formulas, and what the r
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How to Calculate a Weighted Grade (with a Syllabus Example)Work out your current class grade from assignment scores and weights. Includes a full syllabus example, unweighted point
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How to Calculate a Z-Score and Percentile (with Examples)Learn what a z-score is, how to calculate it from a raw score, the mean and standard deviation, and how to turn it into
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How to Cite Sources in APA 7 and MLA 9 (with Examples)Learn how to format APA 7th and MLA 9th edition citations for books, journal articles and web pages, with side-by-side e
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How to Compress a PDF for Free Without Uploading (2026)Shrink PDF file size for free, right in your browser — no upload, no signup, no watermark. A private step-by-step guide.
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How to Compress Images Without Quality Loss (2026)Compress JPG/PNG/WebP images without visible quality loss — without uploading them. A step-by-step in-browser guide.
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How to Convert an Image to Text Free (OCR, 2026)Extract text from an image (OCR) for free in your browser — no upload, no signup. Private step-by-step guide.
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How to Convert PDF to JPG/PNG Free (2026)Convert PDF pages to JPG or PNG images for free in your browser — no upload, no signup. Step-by-step private guide.
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How to Convert PDF to Word Free, No Signup (2026)Turn a PDF into an editable Word document for free in your browser — no signup, no upload, no email required. Step by st
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How to Convert Text to Speech Free, No Signup (2026)Turn text into natural AI voice audio for free — no signup, no API key. Download MP3/WAV. Step-by-step guide.
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How to Count and Round Significant Figures (with Rules)Learn the rules for counting significant figures, how to round to a set number of sig figs, and how to add, subtract, mu
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How to Count Words and Characters (and Why Counts Differ)Learn how words, characters, sentences and reading time are counted, why tools disagree, and the character limits for X,
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How to Do Long Division Step by Step (with Remainders)Learn long division step by step: divide, multiply, subtract, bring down. Covers remainders, decimals, repeating decimal
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How to Edit a PDF Free Online, No Signup (2026)Add text, notes and annotations to a PDF for free in your browser — no signup, no upload. Step-by-step guide.
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How to Find GCF and LCM: Prime Factors and Euclid's MethodLearn three ways to find the greatest common factor and least common multiple of two or more numbers, with worked exampl
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How to Find Slope, Distance and Midpoint from Two PointsLearn the slope, distance and midpoint formulas, how to write the equation of a line through two points, and what vertic
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How to Grade a Test Quickly with a Score ChartGrade a stack of tests fast: build a printable chart of percentage and letter grade for every score, count wrong answers
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How to Test and Improve Your Typing Speed (WPM Explained)Learn how typing speed (WPM) is calculated, the difference between gross and net WPM, and practical ways to type faster
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How to Make a Barcode: Code 128, EAN-13 and UPC-ALearn which barcode type to use, how check digits work, how to generate a Code 128, EAN-13 or UPC-A barcode and print it
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How to Make Crosswords, Word Searches and Bingo CardsMake printable crosswords, word searches and bingo cards from your own vocabulary list: how to choose words, set difficu
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How to Merge PDFs Without Uploading Them (2026)Merge PDF files privately — without uploading them to a server. A step-by-step guide using a free, 100% in-browser tool.
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How to OCR a Scanned PDF Privately, On Your Device (2026)Make a scanned PDF searchable with OCR — without uploading it. A step-by-step guide using a free, on-device tool.
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How to Pick Random Names and Make Fair TeamsLearn how to pick a random name or split a class into fair teams, why some shortcuts are biased, and how a true fair shu
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How to Remove Vocals From a Song Free (2026)Separate vocals from music to make a karaoke or instrumental track for free in your browser — no upload, no signup.
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How to Resize an Image Free Online, No Signup (2026)Resize an image to exact dimensions for free in your browser — no upload, no signup, no quality loss. Step-by-step.
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How to Solve Quadratic Equations: Formula and ExamplesSolve ax² + bx + c = 0 by factoring or the quadratic formula. Learn the discriminant, irrational and complex roots, the
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How to Solve Systems of Equations: 3 Methods with ExamplesSolve two or three linear equations by substitution, elimination or Cramer's rule, and learn how to spot systems with no
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How to Split a PDF for Free (No Upload)Split a PDF into separate pages or extract a page range for free, in your browser — no upload, no signup. Step-by-step g
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How to Use the Pomodoro Technique and a Classroom TimerLearn the Pomodoro technique (25 minutes of focus, 5 of rest), how to adapt it, and how to use a big-screen countdown in
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Title Case vs Sentence Case: Rules and a Case ConverterLearn the rules for title case, sentence case, camelCase, snake_case and kebab-case, which words stay lowercase in headl
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What Do I Need on My Final Exam? Formula and ExamplesWork out the score you need on your final exam to reach a target grade, from your current grade and the exam's weight, w

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