Cach nen tep ZIP xuong 2 MB

Muc tieu ZIP 2 MB xuat hien khi mot chinh sach email hoac mot SMTP relay doanh nghiep gioi han tep dinh kem o 2 MB. Liec gioi han co dat duoc khong phu thuoc vao nhung gi ben trong: mot thu muc nhat ky van ban thuan, xuat CSV hoac ma nguon thuong nen duoc duoi 2 MB khi DEFLATE loai bo cac mau lap lai; mot thu muc anh JPG, clip MP4 hoac PDF da nen thuong khong, vi codec rieng cua moi tep da ep ra su du thua ma vo boc ZIP se loai bo neu khong.

Ba buoc de vua mot ZIP duoi 2 MB: phan loai dau vao, giu muc do o mac dinh, chia giao hang khi phuong tien van con cong kenh. — Ba kiem tra de dat duoi 2 MB: phan loai dau vao theo kha nang nen, de thanh truot muc do o mac dinh va chia giao hang khi phuong tien van con cong kenh.

Da xem lai lan cuoi: 2026-05-21

Da xem lai boi nhom bien tap FreetoolOnline

Thuoc tinh	Gia tri
Noi ZIP duoc xay dung	Trong trinh duyet cua ban; khong cai dat, khong tai khoan, khong nhan
Truong hop su dung 2 MB dien hinh	Gioi han tep dinh kem SMTP doanh nghiep, gioi han tep dinh kem webmail cu, truong tai len bieu mau lien he
Ket qua thuc te cho thu muc nhieu van ban	20 MB nhat ky / CSV thuong nen den ~3-5 MB; 5 MB ma nguon hoac markdown thuong nen den ~700 KB - 1.5 MB
Ket qua thuc te cho thu muc nhieu anh	20 MB anh JPG nen den ~19.5-20.5 MB (khong giam that su duoi gioi han 2 MB)
Cong cu trien khai	https://freetoolonline.com/zip-tools/zip-file.html

Tai sao cu the la 2 MB?

So 2 MB la gioi han lich su tren nhieu he thong email doanh nghiep: mot chinh sach hop thu Exchange gioi han tep dinh kem den, mot truong tai len bieu mau lien he duoc cau hinh cho 2 MB, mot SMTP relay loai bo payload lon hon nhu giam thieu spam. No cung la mot tran pho bien cho webmail cu (Yahoo Classic, Hotmail cu hon) va cho mot so nen tang ve helpdesk chap nhan tep dinh kem qua email. Gioi han doc lap voi quy tac 25 MB cua Gmail nguoi tieu dung; nguoi doc dao xuong day thuong biet ho dang gui den he thong nao.

Chon dau vao co the dat 2 MB mot minh

Co duoc mot ZIP duoi 2 MB la mot cau hoi ve dau vao truoc tien, cau hoi ve cai dat thu hai. Cac thu muc nhieu van ban (nhat ky, CSV, ma nguon, cau hinh) thuong nen tot xuong duoi 2 MB; cac thu muc anh, video va PDF thuong khong, vi codec rieng cua moi tep da ep ra su du thua ma vo boc ZIP se loai bo neu khong. Con duong thuc te den archive 2 MB la thu nho dau vao truoc, khong dua vao muc do nen ZIP. Dau vao van ban thuan nen quyet liet vi co cac doan dai cua token lap lai; 5 MB nhat ky truy cap, xuat CSV, tep cau hinh hoac ma nguon thuong nen duoi 1 MB ben trong mot .zip duy nhat. Anh JPG, video MP4, am thanh MP3 va hau het PDF den voi archive da nen; vo boc ZIP khong the giam chung them va doi khi se them mot vai phan tram chi phi dong goi. Neu dau vao nhieu phuong tien, muc tieu 2 MB thuong khong thuc te ma khong ma hoa lai phuong tien truoc - thu nho JPG qua https://freetoolonline.com/image-tools/compress-image.html hoac xuat lai video o toc do bit thap hon truoc khi luu tru.

Muc do nen lam gi va khong lam gi

Trinh tao tai https://freetoolonline.com/zip-tools/zip-file.html phoi bay mot thanh truot muc do nen. Muc cao hon (Toi da, Cuc dai) tieu hao nhieu thoi gian CPU hon de tim them cac mau lap lai nhung hiem khi cat nhieu hon mot vai phan tram them tu archive nhieu van ban khi qua DEFLATE tieu chuan da chay. Muc thap hon (Luu tru, Nhanh) chi giup khi toc do quan trong hon kich co - vi du mot thu muc lon duoc tai len qua ket noi cham. Thanh truot muc do chu yeu thay doi thoi gian xay dung archive, khong phai liec no co vuot qua duong 2 MB hay khong. Kha nang nen cua dau vao dat tran, khong phai nut muc do.

Khi muc tieu 2 MB khong dat duoc, chia goi

Cho gioi han tep dinh kem 2 MB, cau tra loi kha thi doi khi la chia tach giao hang thay vi chien dau voi archive. ZIP cac dau vao nen duoc cung nhau (cac tep dang van ban, ma nguon, cau hinh) va chung thuong dat duoi 2 MB mot minh; gui cac tep phuong tien trong mot kenh rieng (lien ket chia se tep, URL luu tru dam may hoac mot archive tiep theo nho hon) noi gioi han 2 MB khong ap dung. Giao hang hai goi thuong nho hon va dang tin cay hon mot ZIP duy nhat that bai kiem tra kich co.

So lieu thuc te trong cho cac hinh dang thu muc pho bien

Cac con so xap xi cu the giup thiet lap ky vong truoc khi xay dung. Mot thu muc 20 MB nhat ky van ban thuan hoac CSV thuong dat 3-5 MB ben trong mot .zip duy nhat - vuot qua duong 2 MB cho truong hop do nhung la mot huong di huu ich. 5 MB ma nguon hoac markdown thuong nen den 700 KB - 1.5 MB, duoi gioi han nhieu. Cung 20 MB duoc luu tru duoi dang anh JPG nen den khoang 19.5-20.5 MB, vi cac JPG da duoc nen kieu DEFLATE boi camera va vo boc khong co gi de loai bo. PDF da duoc toi uu hoa cho web hanh xu giong nhu JPG; PDF day cac anh quet tho doi khi co nen mot vai phan tram. Mau: cac dinh dang van ban du thua cao nen quyet liet, phuong tien duoc nen codec hau nhu khong di chuyen, va mot thu muc hon hop dat o dau do giua hai cai do tuy thuoc vao ti le van ban-tren-phuong tien.

Lien quan

Cho cau hoi rong hon "khi nao nen mot thu muc thanh ZIP thuc su tiet kiem khong gian?", doc huong dan chi em https://freetoolonline.com/guides/vi/compress-zip.html cho boi canh danh doi kich co. Cho muc tieu chat hon tren cac archive kich co bieu tuong hoac thu nho, xem https://freetoolonline.com/guides/vi/compress-zip-file-to-100kb.html. Cho huong dan "lam nho ZIP nay" tong quat khong gan mot so cu the, doc https://freetoolonline.com/guides/vi/how-to-make-a-zip-file-smaller.html. Khi ban san sang xay dung archive, trinh tao trong trinh duyet tai https://freetoolonline.com/zip-tools/zip-file.html chi cach mot cu nhap chuot.

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