Image bigger (in bits) after sharp operation than the original

After using sharp like this with a jpg

await sharp(input).trim().toFile(output);

or

await sharp(input).resize({ width: 1000 }).toFile(output);

the output is bigger than the original picture original: 300 Kb trimed: 7 Mb resize: 7 Mb

Any advices ?

[lovell]

Thanks, this input image is saved at a very low quality:

$ identify -verbose PHO_211124_35029728_1_135049727.jpg | grep Quality
  JPEG-Quality: 13

If you’d like a similar low quality for the output, you can set this via:

.jpeg({ quality: 13 })

https://sharp.pixelplumbing.com/api-output#jpeg

Finally, to answer your next question before you’ve asked it, please see #908

[parweb]

nice anticipation 👍