Half-term is nearly here, and for thousands of families that means the annual battle with the suitcase. TikTok is full of confident advice: vacuum bags that promise to shrink a whole wardrobe into a carry-on, neck pillows hollowed out and refilled with socks, boots worn through security to save weight. Before the October getaway rush, experts at it Luggage put six of the most shared viral packing hacks to the test and scored each one out of ten. OK! Magazine reported the results, and they come with a warning worth hearing first. A trick that creates extra space in the case does not create extra room in the airline's weight allowance.

That distinction is the thread running through the whole exercise. Packing hacks can help you save space, but they do not increase your airline's weight allowance, as Nick Gaskin, Sales and Marketing Director at it Luggage, said. Compression bags, packing cubes and rolled clothing can make it easy to underestimate how much you have packed, leaving travellers at risk of overweight baggage fees. His standing advice covers every viral packing hack on the list: always weigh the suitcase after you finish packing instead of judging by how the bag looks or feels.

The winners worth copying

The oldest trick in the book took the top score of nine out of ten. Rolling clothes instead of folding them squeezes more into the case and makes it easier to see what you packed without rummaging. According to the experts it works particularly well for T-shirts, lightweight trousers, dresses and children's outfits, which is why it helps so much when packing for the whole family. One caution travels with it everywhere in these rankings: more space does not mean more weight allowance, so a well-rolled case still earns a turn on the scales.

Matching that nine out of ten is the travel-day uniform. Wear the heaviest clothes to the airport. Heading somewhere cooler this October half-term, pulling on the heaviest boots, coat or jumper frees valuable space and weight in the suitcase itself. The experts at it Luggage called it one of the easiest ways to cut suitcase weight, and it matters most for families on a limited luggage allowance where every kilogram counts. The trade-off is comfort, since nobody wants to sit through a flight overheating under layers of winter clothing, so wear the heavy pieces you can comfortably peel off once you board.

The eight-out-of-ten rating went to another space-squeezer that won by using space that would otherwise go to waste. Stuffing socks and underwear inside shoes turns empty footwear into storage for small essentials, and unlike some viral packing hacks it does not encourage you to pack far more than you need. The experts add one small refinement: pop the socks and underwear inside a little bag first to keep everything clean before tucking them into the shoes. Small wins like this one are the bread and butter of the life hacks section, which collects reader-tested shortcuts for everyday routines.

The tricks that could cost you at the gate

Compression bags earned a respectable seven out of ten, and it is easy to see why families reach for them. Packing for the whole household makes vacuum bags look like the answer to everything, and they genuinely help with bulky jumpers, coats and knitwear on a trip somewhere chilly this October. The catch is the one that lands plenty of travellers in trouble. Vacuum bags make clothes take up less room without making them any lighter, and all that freed-up space tempts you to throw in a few more outfits. That is how cases quietly creep over the airline's limit, so weigh the bag after packing instead of assuming empty space means you are safely within the rules.

Then there is the most notorious of the viral packing hacks: pulling the stuffing out of a travel pillow and replacing it with rolled-up clothes. The experts gave it three out of ten and called the verdict plainly. It could backfire. Airlines set different rules about what passengers can bring on board, and a pillow stuffed with clothing is not automatically exempt from baggage restrictions. A family expecting to sneak extra outfits past the gate could instead face an unexpected charge at the worst moment, with excited children in tow. Before trying any hack designed to beat baggage rules, check the airline's latest policy first, as Gaskin said. The travel section keeps a running watch on airline news and disruptions for anyone planning a trip.

The lowest score of all, one out of ten, went to a habit rather than a hack: packing for every possible scenario. Anyone who has packed for a family holiday knows the pull. Extra shoes, spare jumpers, an outfit for every weather forecast and enough children's clothes to last twice as long as the trip. According to the experts this is one of the quickest ways to end up with an overweight suitcase, and they called it the biggest packing mistake parents make. The fix costs nothing. Plan outfits in advance, choose clothes that can be mixed and matched, and think honestly about what you will actually wear.

The one habit that beats every hack

Once the scores are in, the debate settles on two unglamorous habits that beat all six viral packing hacks on the list. Weigh the case after packing, and read the airline's baggage policy before you leave. The space-saving tricks are worth using. Rolling clothes, wearing the heavy coat and filling the shoes all earned their marks. They still cannot change the number on the check-in scale. Treat these viral packing hacks as a way to pack smarter rather than a way to pack more, and the trip starts with a calm walk through the terminal instead of a nervous shuffle at the weigh-in. Looking after yourself on the road counts too, and the mind and body section has plenty on travelling well.