Why copyright gets its own article

If you write table tennis content, images are almost mandatory: article covers, gear shots, action diagrams, player photos.

But images are also where things go wrong most often. A common story: you grab one from search-engine image results, use it for half a year, and one day a demand letter arrives. This isn’t scaremongering — image-rights enforcement is a mature industry in China, and it usually targets small-to-mid sites and personal accounts rather than big companies.

The core fact is just this: “findable online” and “usable” are two completely different things.

1. The three free commercial-use libraries (the least hassle)

All three licenses allow commercial use and modification, and none require attribution. Your first choice for everyday images.

LibraryLicenseCommercial useAttributionNotes
UnsplashIts own license (close to CC0)✅❌ Not requiredHigh photographic quality, but popular images get reused across many sites
PexelsPexels License✅❌ Not requiredRicher everyday-life scenes, and video too
PixabayPixabay Content License✅❌ Not requiredThe largest library, but the most variable quality, with lots of illustration

What all three forbid: reselling the image as-is (as a stock asset), and implying in your own content that a person in the image endorses your product.

The reality for table tennis subjects: the ping-pong images on these three are mostly “staged” — a racket resting on a ball, an empty table, a shot from behind. Fine for covers and decoration, but you won’t find real match action or specific players.

2. Wikimedia Commons: rich in historical images, but check the license one by one

Wikimedia Commons is a good place to find historical photos, rules diagrams, and equipment construction diagrams, and a common source for player-profile images.

But its biggest difference from the three above is this: every single image has a different license.

License typeCommercial useAttributionNotes
CC0 / Public Domain✅❌Safest
CC BY✅✅ RequiredState author + license + source link
CC BY-SA✅✅ And your work must use the same licenseMixed with all-rights-reserved content, it gets messy
CC BY-NC❌ Not for commercial use—The most common trap, see below
CC BY-ND✅✅ And no modificationNo cropping, no recoloring

The easiest trap to fall into: in CC BY-NC, NC means NonCommercial. A site with ads, a WeChat account with promotional content, an e-commerce product page — all are commercial use, and you can’t use it. Many people see “BY can be used commercially” and stop reading.

The right approach: on the image’s detail page, scroll down to the licensing block and read it word for word before you download. A suggested attribution format: Image: author name / CC BY 4.0 / source link.

3. Event photos and official assets: assume “copyrighted” by default

Match photos published by the ITTF, WTT, national associations, CCTV, and similar bodies are protected by copyright by default. The official galleries of the Chinese Table Tennis Association and the ITTF generally note the source and usage restrictions too.

Two situations to distinguish here:

  • News-reporting quotation: a small amount of use to report on an event, with the source credited, is relatively controllable in risk. But it still sits in the grey zone of “fair use,” not a get-out-of-jail card.
  • Commercial use: for selling, advertising, product pages, or paid content — you must get authorization. Don’t gamble on it.

Practical advice: when you need a player image, prefer a generic one from a free library, or shoot or draw it yourself. If you really must use an event photo, go through official channels to ask for authorization — or just don’t use it.

4. Domestic libraries: watch the “free quota” and the “scope of the license”

Domestic libraries such as Shetu, Qianku, and Mizhi commonly work on a model of a free daily download quota after you register, beyond which you need a membership.

Two things to watch:

  1. Free download ≠ free commercial use. On many platforms the free quota grants personal study use only; commercial use has separate licensing requirements.
  2. Know the difference between a “personal license” and a “corporate license.” A company WeChat account or a corporate site usually needs the corporate license.

Before downloading, read the license type shown on the page — don’t just look at the word “free.”

5. The steadiest plan: produce your own

If you’re in this for the long haul, the least hassle isn’t a stock library — it’s building your own image sources:

  • Shoot it yourself. One phone and one table: shoot the racket, the rubber detail, the feet during footwork. The quality is plenty, and the copyright is 100% yours.
  • Draw your own diagrams. Use SVG or PowerPoint to draw contact points, stance, and the path of the center of gravity — these actually explain technique more clearly than a photo, and carry no copyright issue at all.
  • Build an internal asset library. Shoot once, reuse long-term.

This site’s technique articles lean heavily on that idea: rather than hunt for a “forehand loop” photo of unclear origin, use words and structure to explain the stroke framework.

Is this image usable? A four-step process

Take any image and ask four questions in order:

  1. Where is it from? A library, an official body, or search-engine results? For search-engine results, assume it can’t be used commercially.
  2. What’s the license? Find an explicit license statement. If you can’t find one, treat it as unusable.
  3. Are there NC / ND words? NC → not for commercial use; ND → no cropping or recoloring.
  4. Is attribution required? If so, credit it in the right format, and don’t skip it.

If you’re still unsure after all four, pick another image. Swapping an image always costs less than one demand letter.


Further reading


In one line: for everyday images use Unsplash / Pexels / Pixabay; for historical and diagram images go to Wikimedia Commons but check each license; event photos are copyrighted by default — if you can use your own, don’t use someone else’s.