Personalised Photo Coasters: Sets, Materials and the Best Photo Layouts

The short version

• Coated hardboard is the default, and for photos it is the right one. The ink is bonded into a smooth coating, so fine detail survives. MYPICTURE prints on 3 mm hardboard at 10 x 10 cm, from £4.50 a coaster.

• Buy 4 for a coffee table and 8 for a dining table. A set of 4 covers the sofa corners. A set of 8 covers a full dinner party, with spares.

• Keep faces out of the dead centre. A mug or pint glass covers roughly the middle 7 cm of a 10 cm coaster. Sit the subject slightly high, or a little to one side.

• Your phone photo is almost certainly good enough. A 10 cm coaster needs about 1,181 pixels square at 300 dpi. A normal 12-megapixel phone photo gives you around three times that.

• Whichever set you buy, crop your photo to a square yourself before uploading. Letting the site crop for you is how heads get cut off.

The four decisions, at a glance

Four choices do almost all the work: what the coaster is made of, how many you buy, where the subject sits in the frame, and whether your photo has enough pixels. Get those right and the result is good. Get the first one wrong and nothing else rescues it.

The rest of this guide takes each of the four in turn, with the real specifications and the prices behind them. If you only remember one thing, remember the mug: it hides the middle of the coaster, and almost nobody accounts for that before they upload.

Why the material decides everything else

A coaster has one job before it has any other job: it keeps heat and moisture away from the table underneath. National Trust guidance on caring for household objects makes the point plainly, noting how readily moisture left on a surface marks it and how much of furniture care is simply preventing that contact. Choose the wrong material and you have bought a photograph that quietly damages your furniture.

Coaster materials split into two groups. Some are chosen for print quality, some for looks. Hardboard, ceramic and glass are print-first materials, because the image sits in or under a smooth surface. Slate, cork and wood are texture-first materials, and texture always costs you some detail in the photo. Neither group is wrong. They simply suit different pictures.

Material	Typical UK size	Photo detail	Grip and protection	What to watch
Coated hardboard	9 to 10 cm square	Excellent. Ink is bonded into the coating	Good. Usually has a soft backing	Do not soak or put in a dishwasher
Ceramic tile	10 cm square	Excellent and very glossy	Heavy and stable, but hard	Chips if dropped. Needs a backing pad
Glass	9 to 10 cm square	Very good, but gloss reflects light	Heavy, and can slide on a smooth table	Edges are sharp once chipped
Slate	Around 10 cm (4 in) square	Fair. The texture softens fine detail	Excellent and very stable	A rough underside can scratch wood
Cork	9 to 10 cm, round or square	Fair. The surface is porous, so colours look muted	Excellent grip, and it absorbs spills	Stains easily, and the print wears
Acrylic	Around 9 cm square	Good	Light, so it lifts with a wet glass	Scratches more easily than hardboard

If the photo matters more than the object, pick hardboard or ceramic. Faces, group shots and busy holiday pictures all need the detail that a smooth coated surface preserves. If the object matters more than the photo, slate and cork look better on a table and forgive a weaker picture, because nobody expects fine detail from them in the first place.

MYPICTURE prints its personalised photo coasters on 3 mm hardboard using full-bleed, four-colour dye sublimation. That last part is the bit worth understanding. Sublimation uses heat to bond the ink into the coating rather than laying it on top, so the image cannot peel the way a printed sticker or transfer eventually does. It is also why the surface stays scratch resistant and wipes clean. Every coaster is 10 x 10 cm with rounded corners, which is a centimetre wider each way than the 9 cm coasters most UK sellers use.

Where hardboard loses is water. The core is compressed wood fibre, so a coaster left sitting in a puddle will swell at the edges over time. Wipe it dry and it will outlast the table. Soak it and it will not. Slate and glass do not have that weakness, and it is fair to say so.

Set sizes: single, four, six or eight

Set size is the first decision most buyers make, and it is usually made badly. People buy four because four is the number they have seen, then discover that four coasters do not cover a dining table.

Set size	Best for	Honest verdict
Single	A desk, a bedside table, a stocking filler	Fine on its own, but the cost per coaster is the highest
Set of 4	A coffee table, a two-seater plus armchair, a small kitchen table	The standard choice, and right for most homes
Set of 6	A six-seater dining table	Useful, though it leaves no spares if one goes missing
Set of 8	Dinner parties, wedding favours, a family of four with guests	The best value per coaster, and the safest for entertaining

MYPICTURE sells coasters as a single, a set of 4 or a set of 8, and there is no minimum order. You can run the same photo across the whole set, or use a different image on every coaster. Sets of 6 are worth knowing about because several UK sellers offer them, ASDA Photo among them, with sets of 2, 4, 6 and 8. If you specifically need six matching coasters and nothing else will do, that is a genuine reason to shop elsewhere.

Two set sizes are worth planning around. Eight is the wedding favour number: one set per table, using an engagement photo or a save-the-date design, and it is one of the few favours guests actually take home. Four is the gift number, because it feels like a proper present without needing a large table to justify it.

The best photo layouts for a 10 cm square

Here is the rule nobody selling coasters will tell you. Stand a mug on a 10 cm coaster and its base covers a circle roughly 7 cm across, right in the middle. A pint glass covers a similar area. For most of its working life, your coaster is a 1.5 cm frame around a hidden centre.

That changes everything about how you crop. A centred face is the single most common mistake, because it is the instinct everyone has and it is exactly wrong. Move the subject up, down or to one side, and the photo reads properly whether the coaster is bare or in use.

Layout	How it works	Best for
Single photo, full bleed	One image filling the whole square, edge to edge	Landscapes, pets, group shots with space around the subject
Same photo across the set	One picture repeated on every coaster	A clean, matched look on a coffee table
One photo per coaster	A different image on each of the 4 or 8	Family sets, holiday sets, gifts for grandparents
Photo with a text band	Image on top, a name or date across the lower third	Weddings, anniversaries, save-the-dates
Four-panel collage	Four small images in a 2 x 2 grid on one coaster	Only when the photos are simple and high contrast
Sequence set	One moment split across four coasters in order	Panoramas, wedding processions, a run of holiday shots

Two of those need a warning. The four-panel collage sounds appealing and rarely works, because each panel ends up under 5 cm square and faces get too small to read. If you want several photos, use one photo per coaster instead. And a text band should sit in the lower third, never the middle, for the reason above.

Keep faces and any text at least 5 mm inside the edge. Full-bleed printing needs a small margin of tolerance, and anything closer than 5 mm risks being trimmed. If you are adding a name or a date, short is better: "Cornwall 2026" reads at a glance, a full sentence does not.

What resolution do you need? A worked example

This is where people worry unnecessarily. A 10 cm square coaster printed at 300 dpi needs 1,181 pixels on each side. Printed at 150 dpi, which is perfectly acceptable at this size because a coaster is viewed from a metre away rather than at arm's length, it needs 591 pixels.

Now compare that to what your phone produces. A 12-megapixel photo is roughly 4,032 x 3,024 pixels. Crop that to a square and you still have about 3,024 pixels on each side, which is more than double the 300 dpi requirement. Even a photo saved from a messaging app at 1,080 pixels wide clears the bar comfortably.

The pictures that genuinely fail are screenshots, images pulled from social media at low resolution, and heavily zoomed phone shots taken with digital zoom rather than the telephoto lens. If a photo already looks soft on your phone screen, printing it at 10 cm will not rescue it. Our guide to photo print resolution covers the numbers for larger formats, where the maths starts to matter far more.

What personalised photo coasters cost in the UK

Prices move constantly, and almost every seller in this market discounts. Treat the figures below as a starting point rather than a fixed price list. All were checked on 18 August 2026 on UK sites.

Seller	Listed price	What you get
Snapfish UK	£2.99 (usual price £5.99)	Single coaster, sale price
Pixa Prints (per coaster)	£3.00	Works out per unit in a £6.00 two-pack
Printster	£3.99	Single 9.5 cm hardboard coaster
Amazon (third-party)	£3.99	Single 9 cm wooden coaster
Jessops Photo	£4.00	Two-pack of 9 cm acrylic coasters
CanvasChamp UK	£4.36	Set of 4 or 6
Etsy (third-party)	£4.50	Single coaster
Funky Pigeon	£5.00	Single full-photo coaster
Pixa Prints	£6.00 (£5.40 at 20 or more)	Pack of 2, 9 cm square, same design
MYPICTURE	£4.50 (average retail price £9.00)	Single 10 x 10 cm, 3 mm hardboard
Printerpix	£6.98 to £27.98	Range across set sizes
VistaPrint	£9.89	Photo coaster, free delivery over £55
Not On The High Street	£20.00	Designer-made set

Read that table as three tiers rather than a list of twelve prices. Under £5 buys you a single hardboard coaster from a volume printer. Between £5 and £10 buys you a small set or a heavier material. Above £15 you are paying for a maker rather than a printer, which is a legitimate thing to pay for, but it is not better printing.

MYPICTURE sits in the middle of that first tier at £4.50 for a single 10 x 10 cm coaster, against a £9.00 average retail price. It is not the cheapest headline number here. Printster and Amazon list at £3.99, Snapfish drops to £2.99 on sale, and a Pixa Prints two-pack works out at £3.00 each. What you get for the difference is a larger coaster, a set of 8 option, and a different photo on every coaster if you want one.

Paying much less than the going rate should prompt a question about what has been cut. On coasters it is usually one of three things: the thickness of the board, the quality of the backing, or the printing method. A transfer applied on top of a surface costs less than sublimation bonded into it, and it is the layer that lifts first.

MYPICTURE positions itself at the value end and backs that with a lowest price guarantee that beats any like-for-like UK price by 5%. A company willing to do that is effectively running the price comparison for you.

The mistakes that catch people out

Centring the subject. Covered above, and worth repeating because it is the one that ruins otherwise good sets. Check where the mug will sit before you commit to a crop.

Letting the site crop for you. Upload a 4:3 or 3:2 photo into a square template and roughly a quarter to a third of the width disappears. The software makes a reasonable guess. It does not know which head matters.

Using a dark photo. Coasters live on tables under indoor lighting, often in a lamp-lit room. A moody, low-key picture that looks striking on a phone screen turns muddy on a 10 cm square. Brighter photos with clear contrast hold up far better.

Washing them badly. Wipe the surface with a soft damp cloth and a little washing-up liquid. Do not put hardboard, cork or wooden coasters in a dishwasher, and do not leave them soaking. Abrasive sponges dull a coated surface over time, and once the gloss goes it does not come back.

Ordering too late for Christmas. Coaster searches roughly triple in November and December, and production queues lengthen with them. MYPICTURE production runs 3 to 6 working days plus UK delivery, so most orders arrive within about a week. In December, order earlier than you think you need to.

A three-question test to settle it

1. Will a mug sit on it every day, or is it mostly decoration? Everyday use means hardboard or ceramic. Decoration means slate or cork is fair game.

2. How many people sit at your table? Four or fewer, buy a set of 4. Six or more, or you entertain, buy 8.

3. Is the photo about a face, or about a place? A face needs an off-centre crop and a print-first material. A place will survive almost anything.

If your answers split, the material question wins. A well-chosen photo on the wrong surface disappoints every time, whereas an average photo on a good surface still looks like a proper gift.

Why choose MY-PICTURE.CO.UK over other competitors?

MYPICTURE competes on price and on print specification rather than on being a boutique. Coasters are printed on 3 mm hardboard at 10 x 10 cm using full-bleed four-colour dye sublimation, sold as a single, a set of 4 or a set of 8, with the option of a different photo on every coaster. A single coaster is £4.50 against a £9.00 average retail price. UK delivery is free on orders over £49, and there is a lowest price guarantee that beats any like-for-like UK price by 5%.

The table below compares specific dimensions against two UK sellers ranking for the same searches. It is not a claim to be best at everything.

*Ratings and prices correct as of August 2026. Prices exclude delivery; all brands run periodic promotions.

If you want a set that survives daily use and still looks like the photo you uploaded, start with the material, then the set size, then the crop. Get those three right and the rest takes care of itself. You can design a set of photo coasters in about five minutes.

Frequently asked questions