Learn to get more from free online tools.

Image compression reduces file size so a page can load faster and use less bandwidth. The aim is not to make the file as small as possible. The aim is to find a sensible balance between visual quality, dimensions and file size.

Step-by-step

1. Start from the best-quality original you have.
2. Resize the image to the largest dimensions it will actually need on the page.
3. Choose JPG for most photographs, PNG for transparency or sharp interface graphics, and WebP for efficient web delivery.
4. Lower quality gradually and compare the result at normal viewing size.
5. Keep the original file separately in case you need to create another version later.

Strong passwords are long, unique and difficult to predict. A password should not be reused across important accounts, because one breached service could expose access to several others.

Better password habits

• Prefer length and randomness over clever substitutions.
• Use a different password for every important account.
• Store passwords in a reputable password manager rather than in plain text.
• Enable multi-factor authentication where available.
• Never send passwords through ordinary messages or email.

A page title and meta description help search engines and potential visitors understand what a page offers. They should describe the real page clearly rather than promise something the page does not provide.

A useful page title

• Make the main topic obvious.
• Keep each important page title distinct.
• Place the strongest topic near the beginning when it reads naturally.
• Add the brand name only when it improves clarity.

A useful meta description

• Summarise the real benefit of the page.
• Use natural language rather than a list of repeated keywords.
• Give the reader a reason to choose the result.

A useful prompt gives the model enough context to understand the task, audience, constraints and desired output. Vague instructions can still work, but specific instructions usually produce a more usable first draft.

A practical prompt structure

1. Task: State what you need done.
2. Context: Explain the situation and relevant background.
3. Audience: Describe who the result is for.
4. Constraints: Set tone, length, exclusions or required facts.
5. Format: Ask for paragraphs, headings, a checklist or another useful structure.

Merging combines documents, splitting extracts selected pages and rotating changes page orientation. Always work from a copy when the original document is important.

Choose the right action

• Merge: Combine several PDFs into one file.
• Split: Extract only the pages you need.
• Rotate: Correct pages that appear sideways or upside down.

A good video title communicates a clear topic and benefit. The opening hook should quickly show viewers why the video is worth watching. The description can add context, links and supporting information.

Good practice

• Promise only what the video actually delivers.
• Use one clear main topic rather than several competing ideas.
• Make the first lines of the description useful on their own.
• Avoid keyword stuffing and misleading urgency.

JPG is usually suitable for photographs. PNG is useful for transparency and sharp graphics. WebP often provides efficient web delivery for both photos and graphics.

QR codes store text, links or other compact information in a pattern that a compatible camera or scanner can read.

Before publishing a QR code

1. Use the final destination URL.
2. Generate the code at a suitable size.
3. Test it on more than one device.
4. Leave clear space around the code.
5. Avoid stretching or distorting the image.

JSON is a text format commonly used to exchange structured data. Objects use curly braces, arrays use square brackets and property names normally appear in double quotes.

Common errors

• Missing commas between values.
• Using single quotes instead of double quotes.
• Leaving a trailing comma where it is not allowed.
• Forgetting a closing brace or bracket.

Base64 converts binary or text data into a limited set of text characters. It is useful for transport and embedding, but it is not encryption and does not provide secrecy.

A canonical tag indicates the preferred URL for a page when similar or duplicate versions may exist. It is a signal, not a guarantee.

Use a canonical carefully

• Point to the genuine preferred version.
• Use a complete absolute URL.
• Avoid canonical chains where one page points to another that points somewhere else.
• Do not use a canonical to hide unrelated duplicate content problems.

Structured data helps machines understand information that is already visible on a page. It should accurately represent the real content.

Some browser tools process information locally, while others may use external scripts, services or analytics. Users should still apply sensible precautions.

• Do not paste secrets into tools unless you understand how the tool handles them.
• Keep backups of important files.
• Use trusted devices and updated browsers.
• Read the privacy policy for sensitive workflows.

UTM parameters label campaign traffic so analytics tools can group visits by source, medium and campaign.

A useful social bio quickly explains who you are, who you help, the benefit you offer and the next action a visitor can take.

The Pomodoro method separates focused work from planned breaks. It can help when a task feels difficult to start or maintain.

1. Choose one clearly defined task.
2. Remove avoidable distractions.
3. Work until the timer finishes.
4. Take a short break.
5. Review progress before beginning another session.

A useful checklist focuses on important repeatable actions. Each item should be clear enough that someone can tell whether it is complete.

• Use action verbs.
• Keep one action per item.
• Put steps in the order they should happen.
• Remove items that do not prevent mistakes or improve consistency.

Alt text should communicate the relevant purpose or content of an image. It is not necessary to describe every visual detail.

Ask three questions

1. Why is the image on the page?
2. What information would be lost if the image did not load?
3. Is nearby text already communicating the same information?